Short division with remainders
By the end of this chapter you will be able to
- Use the short method to divide a two-digit number by a one-digit number
- Write answers with a remainder
- Decide what a remainder means in a problem
- Estimate with the tables, and check the answer
- Solve sharing problems with remainders
You should already know
- Times tables to 12 times 12 (chapter 3)
- Multiplying a two-digit number by a one-digit number (chapter 4)
Where this leads
- Long division with two-digit divisors (a later level)
Step-by-step practice: maths (Level 5). Small steps, repeated until fluent. Content: Divide a two-digit number by a one-digit number with the short written method (Y5 paraphrase), Interpret a remainder in a problem: round up, round down or keep it (Y5 paraphrase), Check a division with multiplication and addition (Y5 paraphrase), Divide with the tables known, and estimate the answer first (Y4 paraphrase).
Exercise P Do you remember?
Non-calculatorMethod. Split 12 into 10 and 2.
- Work out 10 × 7. Multiplying by 10 adds a zero.10 × 7 = 70
- Work out 2 × 7, and add. Add the two parts.2 × 7 = 14, so 70 + 14 = 84
- Write the answer. This is the total.84
Check. Check: 84 ÷ 7 = 12.
Watch out. Split 12 into 10 and 2 each time.
Method. Multiply the ones first, carry the tens.
- Multiply the ones. Write the ones digit and carry the tens.8 × 4 = 32, write 2 and carry 3
- Multiply the tens and add the carried 3. Add the carried number before you write the tens digit.3 × 4 = 12, plus 3 = 15
- Write the answer. Put the digits together.152
Check. Check: 152 ÷ 4 = 38.
Watch out. Add the carried number to the tens product.
Method. Add 1 to the ten thousands digit.
- Look at the ten thousands digit. It is the 2 in 62,540.The digit is 6
- Add 1 to it. Only the ten thousands digit changes.6 + 1 = 7
- Write the answer. All the other digits stay the same.72,540
Check. Check: 72,540 - 10,000 = 62,540.
Watch out. Only the ten thousands digit changes.
Method. Look at the hundreds digit.
- Look at the hundreds digit. It decides whether to round up or down.The hundreds digit is 4
- Decide. 4 is 4 or less, so round down.4 is 4 or less
- Write the rounded number. Replace the hundreds, tens and ones with zeros.5,000
Check. Check: 5,000 is the nearest multiple of 1,000 to 5,482.
Watch out. Round down on a 4 or less.
Method. Use the 8 times table.
- Count in eights nine times. Each count adds 8.8, 16, 24, 32, 40, 48, 56, 64, 72
- The last number we said is the answer. We counted nine groups of 8.8 × 9 = 72
- Write the answer. This is the total.72
Check. Check: 72 ÷ 9 = 8.
Watch out. Count the eights carefully.
Short division with no remainder
Short division shares a number into equal groups, one column at a time. Start with the tens. Share the tens into groups, then bring down the ones and share them too.
In 68 ÷ 4, 6 tens shared into groups of 4 make 1 ten each with 2 tens left, and so on.
Key ideas
- Share the tens first, then the ones.
- Write each answer above its column.
- A remainder is what is left at the end.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 6 tens into groups of 4.6 ÷ 4 = 1 r 2
- Bring down the ones. The tens left over become ten ones each.2 tens and 8 ones = 28
- Share 28 into groups of 4. How many groups of 4 are in 28?28 ÷ 4 = 7 r 0
- Write the answer. The remainder is what is left over; write it after the answer.17
Check. Check: 17 × 4 + 0 = 68.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 6.8 ÷ 6 = 1 r 2
- Bring down the ones. The tens left over become ten ones each.2 tens and 4 ones = 24
- Share 24 into groups of 6. How many groups of 6 are in 24?24 ÷ 6 = 4 r 0
- Write the answer. The remainder is what is left over; write it after the answer.14
Check. Check: 14 × 6 + 0 = 84.
Watch out. The remainder must be smaller than the number you divide by.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 5 are in 47. Use the times table of the divisor.9 groups of 5 = 45
- Find what is left over. The remainder is the number left after the groups.47 - 45 = 2
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.9 × 5 + 2 = 45 + 2 = 47
- Write the answer. This is the answer with its remainder.9 remainder 2
Check. Check: 9 × 5 + 2 = 47.
Watch out. If the check does not give the number you started with, divide again.
Watch out
Watch out. Do not divide the ones before the tens. Start from the left, with the tens.
Exam tip
Grown-up tip. Ask the child to use the times table first: “How many 4s make 68?” before they use the layout.
Exercise 5A Practice: short division, no remainder
Non-calculatorMethod. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 4 tens into groups of 3.4 ÷ 3 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 8 ones = 18
- Share 18 into groups of 3. How many groups of 3 are in 18?18 ÷ 3 = 6 r 0
- Write the answer. The remainder is what is left over; write it after the answer.16
Check. Check: 16 × 3 + 0 = 48.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 4 tens cannot make a group of 5 on their own, so use all of 40.40 is the number to share
- Share 40 into groups of 5. How many groups of 5 are in 40?40 ÷ 5 = 8 r 0
- Write the answer. The remainder is what is left over; write it after the answer.8
Check. Check: 8 × 5 + 0 = 40.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 2.7 ÷ 2 = 3 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 2 ones = 12
- Share 12 into groups of 2. How many groups of 2 are in 12?12 ÷ 2 = 6 r 0
- Write the answer. The remainder is what is left over; write it after the answer.36
Check. Check: 36 × 2 + 0 = 72.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 6.7 ÷ 6 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 8 ones = 18
- Share 18 into groups of 6. How many groups of 6 are in 18?18 ÷ 6 = 3 r 0
- Write the answer. The remainder is what is left over; write it after the answer.13
Check. Check: 13 × 6 + 0 = 78.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 2 tens cannot make a group of 6 on their own, so use all of 24.24 is the number to share
- Share 24 into groups of 6. How many groups of 6 are in 24?24 ÷ 6 = 4 r 0
- Write the answer. The remainder is what is left over; write it after the answer.4
Check. Check: 4 × 6 + 0 = 24.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 6 tens cannot make a group of 9 on their own, so use all of 63.63 is the number to share
- Share 63 into groups of 9. How many groups of 9 are in 63?63 ÷ 9 = 7 r 0
- Write the answer. The remainder is what is left over; write it after the answer.7
Check. Check: 7 × 9 + 0 = 63.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 9 tens into groups of 3.9 ÷ 3 = 3 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 0 ones = 0
- Share 0 into groups of 3. How many groups of 3 are in 0?0 ÷ 3 = 0 r 0
- Write the answer. The remainder is what is left over; write it after the answer.30
Check. Check: 30 × 3 + 0 = 90.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 9 tens into groups of 8.9 ÷ 8 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 6 ones = 16
- Share 16 into groups of 8. How many groups of 8 are in 16?16 ÷ 8 = 2 r 0
- Write the answer. The remainder is what is left over; write it after the answer.12
Check. Check: 12 × 8 + 0 = 96.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 5 tens cannot make a group of 9 on their own, so use all of 54.54 is the number to share
- Share 54 into groups of 9. How many groups of 9 are in 54?54 ÷ 9 = 6 r 0
- Write the answer. The remainder is what is left over; write it after the answer.6
Check. Check: 6 × 9 + 0 = 54.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 1 tens cannot make a group of 9 on their own, so use all of 18.18 is the number to share
- Share 18 into groups of 9. How many groups of 9 are in 18?18 ÷ 9 = 2 r 0
- Write the answer. The remainder is what is left over; write it after the answer.2
Check. Check: 2 × 9 + 0 = 18.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 4 tens into groups of 3.4 ÷ 3 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 2 ones = 12
- Share 12 into groups of 3. How many groups of 3 are in 12?12 ÷ 3 = 4 r 0
- Write the answer. The remainder is what is left over; write it after the answer.14
Check. Check: 14 × 3 + 0 = 42.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 5 tens into groups of 5.5 ÷ 5 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 0 ones = 0
- Share 0 into groups of 5. How many groups of 5 are in 0?0 ÷ 5 = 0 r 0
- Write the answer. The remainder is what is left over; write it after the answer.10
Check. Check: 10 × 5 + 0 = 50.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 6 tens cannot make a group of 8 on their own, so use all of 64.64 is the number to share
- Share 64 into groups of 8. How many groups of 8 are in 64?64 ÷ 8 = 8 r 0
- Write the answer. The remainder is what is left over; write it after the answer.8
Check. Check: 8 × 8 + 0 = 64.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 8.8 ÷ 8 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 0 ones = 0
- Share 0 into groups of 8. How many groups of 8 are in 0?0 ÷ 8 = 0 r 0
- Write the answer. The remainder is what is left over; write it after the answer.10
Check. Check: 10 × 8 + 0 = 80.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 8.8 ÷ 8 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 8 ones = 8
- Share 8 into groups of 8. How many groups of 8 are in 8?8 ÷ 8 = 1 r 0
- Write the answer. The remainder is what is left over; write it after the answer.11
Check. Check: 11 × 8 + 0 = 88.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 5.7 ÷ 5 = 1 r 2
- Bring down the ones. The tens left over become ten ones each.2 tens and 0 ones = 20
- Share 20 into groups of 5. How many groups of 5 are in 20?20 ÷ 5 = 4 r 0
- Write the answer. The remainder is what is left over; write it after the answer.14
Check. Check: 14 × 5 + 0 = 70.
Watch out. The remainder must be smaller than the number you divide by.
Writing a remainder
Sometimes the number does not share exactly. The part left over is the remainder. Write it after the answer: 47 ÷ 5 = 9 remainder 2.
The remainder is always smaller than the number you divide by.
Key ideas
- Write the answer as: whole number remainder the amount left.
- The remainder must be smaller than the divisor.
- If there is no remainder, write the whole number only.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 4 tens cannot make a group of 5 on their own, so use all of 47.47 is the number to share
- Share 47 into groups of 5. How many groups of 5 are in 47?47 ÷ 5 = 9 r 2
- Write the answer. The remainder is what is left over; write it after the answer.9 remainder 2
Check. Check: 9 × 5 + 2 = 47.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 7 tens cannot make a group of 8 on their own, so use all of 73.73 is the number to share
- Share 73 into groups of 8. How many groups of 8 are in 73?73 ÷ 8 = 9 r 1
- Write the answer. The remainder is what is left over; write it after the answer.9 remainder 1
Check. Check: 9 × 8 + 1 = 73.
Watch out. The remainder must be smaller than the number you divide by.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.9 × 5 + 2 = 47
- Compare with 47. The result must be 47, and the remainder must be smaller than 5.47 is the same as 47; 2 is smaller than 5
- Write Yes or No. Yes if the check works; No if it does not.Yes
Check. The correct answer is 9 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Watch out
Watch out. A remainder of 5 or more when dividing by 5 means the answer is wrong. Share one more group.
Exam tip
Grown-up tip. Ask: “Is the remainder smaller than the number you divided by?”
Exercise 5B Practice: writing a remainder
Non-calculatorMethod. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 2 tens cannot make a group of 8 on their own, so use all of 20.20 is the number to share
- Share 20 into groups of 8. How many groups of 8 are in 20?20 ÷ 8 = 2 r 4
- Write the answer. The remainder is what is left over; write it after the answer.2 remainder 4
Check. Check: 2 × 8 + 4 = 20.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 6 tens into groups of 3.6 ÷ 3 = 2 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 4 ones = 4
- Share 4 into groups of 3. How many groups of 3 are in 4?4 ÷ 3 = 1 r 1
- Write the answer. The remainder is what is left over; write it after the answer.21 remainder 1
Check. Check: 21 × 3 + 1 = 64.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 4.7 ÷ 4 = 1 r 3
- Bring down the ones. The tens left over become ten ones each.3 tens and 1 ones = 31
- Share 31 into groups of 4. How many groups of 4 are in 31?31 ÷ 4 = 7 r 3
- Write the answer. The remainder is what is left over; write it after the answer.17 remainder 3
Check. Check: 17 × 4 + 3 = 71.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 6 tens into groups of 6.6 ÷ 6 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 3 ones = 3
- Share 3 into groups of 6. How many groups of 6 are in 3?3 ÷ 6 = 0 r 3
- Write the answer. The remainder is what is left over; write it after the answer.10 remainder 3
Check. Check: 10 × 6 + 3 = 63.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 1 tens cannot make a group of 4 on their own, so use all of 11.11 is the number to share
- Share 11 into groups of 4. How many groups of 4 are in 11?11 ÷ 4 = 2 r 3
- Write the answer. The remainder is what is left over; write it after the answer.2 remainder 3
Check. Check: 2 × 4 + 3 = 11.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 6 tens into groups of 6.6 ÷ 6 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 8 ones = 8
- Share 8 into groups of 6. How many groups of 6 are in 8?8 ÷ 6 = 1 r 2
- Write the answer. The remainder is what is left over; write it after the answer.11 remainder 2
Check. Check: 11 × 6 + 2 = 68.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 5 tens cannot make a group of 7 on their own, so use all of 54.54 is the number to share
- Share 54 into groups of 7. How many groups of 7 are in 54?54 ÷ 7 = 7 r 5
- Write the answer. The remainder is what is left over; write it after the answer.7 remainder 5
Check. Check: 7 × 7 + 5 = 54.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 6.7 ÷ 6 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 7 ones = 17
- Share 17 into groups of 6. How many groups of 6 are in 17?17 ÷ 6 = 2 r 5
- Write the answer. The remainder is what is left over; write it after the answer.12 remainder 5
Check. Check: 12 × 6 + 5 = 77.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 8.8 ÷ 8 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 7 ones = 7
- Share 7 into groups of 8. How many groups of 8 are in 7?7 ÷ 8 = 0 r 7
- Write the answer. The remainder is what is left over; write it after the answer.10 remainder 7
Check. Check: 10 × 8 + 7 = 87.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 7.7 ÷ 7 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 8 ones = 8
- Share 8 into groups of 7. How many groups of 7 are in 8?8 ÷ 7 = 1 r 1
- Write the answer. The remainder is what is left over; write it after the answer.11 remainder 1
Check. Check: 11 × 7 + 1 = 78.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 4 tens into groups of 3.4 ÷ 3 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 0 ones = 10
- Share 10 into groups of 3. How many groups of 3 are in 10?10 ÷ 3 = 3 r 1
- Write the answer. The remainder is what is left over; write it after the answer.13 remainder 1
Check. Check: 13 × 3 + 1 = 40.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 7.7 ÷ 7 = 1 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 3 ones = 3
- Share 3 into groups of 7. How many groups of 7 are in 3?3 ÷ 7 = 0 r 3
- Write the answer. The remainder is what is left over; write it after the answer.10 remainder 3
Check. Check: 10 × 7 + 3 = 73.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 4.7 ÷ 4 = 1 r 3
- Bring down the ones. The tens left over become ten ones each.3 tens and 5 ones = 35
- Share 35 into groups of 4. How many groups of 4 are in 35?35 ÷ 4 = 8 r 3
- Write the answer. The remainder is what is left over; write it after the answer.18 remainder 3
Check. Check: 18 × 4 + 3 = 75.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 6 tens into groups of 5.6 ÷ 5 = 1 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 6 ones = 16
- Share 16 into groups of 5. How many groups of 5 are in 16?16 ÷ 5 = 3 r 1
- Write the answer. The remainder is what is left over; write it after the answer.13 remainder 1
Check. Check: 13 × 5 + 1 = 66.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 7 tens into groups of 2.7 ÷ 2 = 3 r 1
- Bring down the ones. The tens left over become ten ones each.1 tens and 9 ones = 19
- Share 19 into groups of 2. How many groups of 2 are in 19?19 ÷ 2 = 9 r 1
- Write the answer. The remainder is what is left over; write it after the answer.39 remainder 1
Check. Check: 39 × 2 + 1 = 79.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 4.8 ÷ 4 = 2 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 3 ones = 3
- Share 3 into groups of 4. How many groups of 4 are in 3?3 ÷ 4 = 0 r 3
- Write the answer. The remainder is what is left over; write it after the answer.20 remainder 3
Check. Check: 20 × 4 + 3 = 83.
Watch out. The remainder must be smaller than the number you divide by.
What the remainder means in a problem
A remainder can mean different things. For buses, the people left over still need a bus, so round up.
For full bags, only complete bags count, so round down. For sharing, give the whole number each and say what is left.
Key ideas
- Round up when the leftover still needs one more group.
- Round down when only full groups count.
- Say what is left over when the question asks for it.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 47 children in buses of 5.47 ÷ 5 = 9 remainder 2
- Decide what the remainder means. The children left over still need a bus, so round up.2 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.10 buses
Check. Check: 10 buses hold 50 children, which is at least 47.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.47 ÷ 5 = 9 remainder 2
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.2 sweets are left over
- Write the answer. Only full bags count.9 full bags
Check. Check: 9 full bags hold 45 sweets, and 47 - 45 = 2.
Watch out. Round down when only full groups are wanted.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.47 ÷ 5 = 9 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.9 each and 2 left over
- Write the answer. Give both parts, as the question asks.9 each, 2 left over
Check. Check: 9 × 5 + 2 = 47.
Watch out. The remainder is not shared. Say how many are left.
Watch out
Watch out. Do not always round down. Read the question to see what the remainder means.
Exam tip
Grown-up tip. Ask: “What does the leftover mean here? Does it need one more bus, or is it just left over?”
Exercise 5C Practice: remainders in problems
Non-calculatorMethod. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 47 children in buses of 8.47 ÷ 8 = 5 remainder 7
- Decide what the remainder means. The children left over still need a bus, so round up.7 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.6 buses
Check. Check: 6 buses hold 48 children, which is at least 47.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 76 children in buses of 7.76 ÷ 7 = 10 remainder 6
- Decide what the remainder means. The children left over still need a bus, so round up.6 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.11 buses
Check. Check: 11 buses hold 77 children, which is at least 76.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.33 ÷ 4 = 8 remainder 1
- Read the answer and the remainder. The whole number is each share; the remainder is left over.8 each and 1 left over
- Write the answer. Give both parts, as the question asks.8 each, 1 left over
Check. Check: 8 × 4 + 1 = 33.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.66 ÷ 8 = 8 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.8 each and 2 left over
- Write the answer. Give both parts, as the question asks.8 each, 2 left over
Check. Check: 8 × 8 + 2 = 66.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.97 ÷ 7 = 13 remainder 6
- Read the answer and the remainder. The whole number is each share; the remainder is left over.13 each and 6 left over
- Write the answer. Give both parts, as the question asks.13 each, 6 left over
Check. Check: 13 × 7 + 6 = 97.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.61 ÷ 3 = 20 remainder 1
- Read the answer and the remainder. The whole number is each share; the remainder is left over.20 each and 1 left over
- Write the answer. Give both parts, as the question asks.20 each, 1 left over
Check. Check: 20 × 3 + 1 = 61.
Watch out. The remainder is not shared. Say how many are left.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 31 children in buses of 9.31 ÷ 9 = 3 remainder 4
- Decide what the remainder means. The children left over still need a bus, so round up.4 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.4 buses
Check. Check: 4 buses hold 36 children, which is at least 31.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.87 ÷ 3 = 29
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.No sweets are left over
- Write the answer. Only full bags count.29 full bags
Check. Check: 29 full bags hold 87 sweets, and 87 - 87 = 0.
Watch out. Round down when only full groups are wanted.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.35 ÷ 4 = 8 remainder 3
- Read the answer and the remainder. The whole number is each share; the remainder is left over.8 each and 3 left over
- Write the answer. Give both parts, as the question asks.8 each, 3 left over
Check. Check: 8 × 4 + 3 = 35.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.88 ÷ 9 = 9 remainder 7
- Read the answer and the remainder. The whole number is each share; the remainder is left over.9 each and 7 left over
- Write the answer. Give both parts, as the question asks.9 each, 7 left over
Check. Check: 9 × 9 + 7 = 88.
Watch out. The remainder is not shared. Say how many are left.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.81 ÷ 3 = 27
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.No sweets are left over
- Write the answer. Only full bags count.27 full bags
Check. Check: 27 full bags hold 81 sweets, and 81 - 81 = 0.
Watch out. Round down when only full groups are wanted.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 23 children in buses of 8.23 ÷ 8 = 2 remainder 7
- Decide what the remainder means. The children left over still need a bus, so round up.7 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.3 buses
Check. Check: 3 buses hold 24 children, which is at least 23.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.65 ÷ 6 = 10 remainder 5
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.5 sweets are left over
- Write the answer. Only full bags count.10 full bags
Check. Check: 10 full bags hold 60 sweets, and 65 - 60 = 5.
Watch out. Round down when only full groups are wanted.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 69 children in buses of 3.69 ÷ 3 = 23
- Decide what the remainder means. The children left over still need a bus, so round up.No children are left over
- Write the answer. Round up when the leftover people still need a place.23 buses
Check. Check: 23 buses hold 69 children, which is at least 69.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.77 ÷ 9 = 8 remainder 5
- Read the answer and the remainder. The whole number is each share; the remainder is left over.8 each and 5 left over
- Write the answer. Give both parts, as the question asks.8 each, 5 left over
Check. Check: 8 × 9 + 5 = 77.
Watch out. The remainder is not shared. Say how many are left.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 91 children in buses of 6.91 ÷ 6 = 15 remainder 1
- Decide what the remainder means. The children left over still need a bus, so round up.1 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.16 buses
Check. Check: 16 buses hold 96 children, which is at least 91.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Estimating with the tables, and checking
To estimate, find the multiples of the number you divide by that are either side of the number. 47 ÷ 5: 5 × 9 = 45 and 5 × 10 = 50, so the answer is 9 with a remainder.
To check, multiply the whole number of groups by the divisor and add the remainder. You should get the number you started with.
Key ideas
- Use the table of the divisor to estimate.
- Check: groups × divisor + remainder = the number.
- The remainder must be smaller than the divisor.
Method. Find the multiple of the divisor that is just below the number. It tells you the whole number of groups.
- Count in 5s. Keep counting until you go past 47.5, 10, ... up to 47
- Find the largest multiple. It is the last multiple that is not more than the number.45 is not more than 47
- Write the multiple. This is the number that helps you find the division.45
Check. Check: 9 × 5 = 45, and 45 is not more than 47.
Watch out. Do not pick the multiple just above the number; it is more than the number.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 5 are in 47. Use the times table of the divisor.9 groups of 5 = 45
- Find what is left over. The remainder is the number left after the groups.47 - 45 = 2
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.9 × 5 + 2 = 45 + 2 = 47
- Write the answer. This is the answer with its remainder.9 remainder 2
Check. Check: 9 × 5 + 2 = 47.
Watch out. If the check does not give the number you started with, divide again.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.9 × 5 + 2 = 47
- Compare with 47. The result must be 47, and the remainder must be smaller than 5.47 is the same as 47; 2 is smaller than 5
- Write Yes or No. Yes if the check works; No if it does not.Yes
Check. The correct answer is 9 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Watch out
Watch out. 9 remainder 7 is not correct for 47 ÷ 5. The remainder must be less than 5.
Exam tip
Grown-up tip. Ask the child to check every answer by multiplying back, using the same times table.
Exercise 5D Practice: estimating and checking divisions
Non-calculatorMethod. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.4 × 7 + 6 = 34
- Compare with 41. The result must be 41, and the remainder must be smaller than 7.34 is not the same as 41; 6 is smaller than 7
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 5 remainder 6.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Find the multiple of the divisor that is just below the number. It tells you the whole number of groups.
- Count in 5s. Keep counting until you go past 53.5, 10, ... up to 53
- Find the largest multiple. It is the last multiple that is not more than the number.50 is not more than 53
- Write the multiple. This is the number that helps you find the division.50
Check. Check: 10 × 5 = 50, and 50 is not more than 53.
Watch out. Do not pick the multiple just above the number; it is more than the number.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 7 are in 29. Use the times table of the divisor.4 groups of 7 = 28
- Find what is left over. The remainder is the number left after the groups.29 - 28 = 1
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.4 × 7 + 1 = 28 + 1 = 29
- Write the answer. This is the answer with its remainder.4 remainder 1
Check. Check: 4 × 7 + 1 = 29.
Watch out. If the check does not give the number you started with, divide again.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.16 × 3 + 0 = 48
- Compare with 48. The result must be 48, and the remainder must be smaller than 3.48 is the same as 48; 0 is smaller than 3
- Write Yes or No. Yes if the check works; No if it does not.Yes
Check. The correct answer is 16.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.21 × 4 + 0 = 84
- Compare with 88. The result must be 88, and the remainder must be smaller than 4.84 is not the same as 88; 0 is smaller than 4
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 22.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 8 are in 22. Use the times table of the divisor.2 groups of 8 = 16
- Find what is left over. The remainder is the number left after the groups.22 - 16 = 6
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.2 × 8 + 6 = 16 + 6 = 22
- Write the answer. This is the answer with its remainder.2 remainder 6
Check. Check: 2 × 8 + 6 = 22.
Watch out. If the check does not give the number you started with, divide again.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 7 are in 38. Use the times table of the divisor.5 groups of 7 = 35
- Find what is left over. The remainder is the number left after the groups.38 - 35 = 3
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.5 × 7 + 3 = 35 + 3 = 38
- Write the answer. This is the answer with its remainder.5 remainder 3
Check. Check: 5 × 7 + 3 = 38.
Watch out. If the check does not give the number you started with, divide again.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.1 × 4 + 3 = 7
- Compare with 10. The result must be 10, and the remainder must be smaller than 4.7 is not the same as 10; 3 is smaller than 4
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 2 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Find the multiple of the divisor that is just below the number. It tells you the whole number of groups.
- Count in 3s. Keep counting until you go past 87.3, 6, ... up to 87
- Find the largest multiple. It is the last multiple that is not more than the number.87 is not more than 87
- Write the multiple. This is the number that helps you find the division.87
Check. Check: 29 × 3 = 87, and 87 is not more than 87.
Watch out. Do not pick the multiple just above the number; it is more than the number.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 2 are in 74. Use the times table of the divisor.37 groups of 2 = 74
- Find what is left over. The remainder is the number left after the groups.74 - 74 = 0
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.37 × 2 + 0 = 74 + 0 = 74
- Write the answer. This is the answer with its remainder.37
Check. Check: 37 × 2 + 0 = 74.
Watch out. If the check does not give the number you started with, divide again.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.12 × 8 + 2 = 98
- Compare with 98. The result must be 98, and the remainder must be smaller than 8.98 is the same as 98; 2 is smaller than 8
- Write Yes or No. Yes if the check works; No if it does not.Yes
Check. The correct answer is 12 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.11 × 6 + 4 = 70
- Compare with 70. The result must be 70, and the remainder must be smaller than 6.70 is the same as 70; 4 is smaller than 6
- Write Yes or No. Yes if the check works; No if it does not.Yes
Check. The correct answer is 11 remainder 4.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.11 × 9 + 7 = 106
- Compare with 97. The result must be 97, and the remainder must be smaller than 9.106 is not the same as 97; 7 is smaller than 9
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 10 remainder 7.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 2 are in 56. Use the times table of the divisor.28 groups of 2 = 56
- Find what is left over. The remainder is the number left after the groups.56 - 56 = 0
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.28 × 2 + 0 = 56 + 0 = 56
- Write the answer. This is the answer with its remainder.28
Check. Check: 28 × 2 + 0 = 56.
Watch out. If the check does not give the number you started with, divide again.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.17 × 5 + 2 = 87
- Compare with 82. The result must be 82, and the remainder must be smaller than 5.87 is not the same as 82; 2 is smaller than 5
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 16 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Method. Check with multiplication and addition: groups × divisor + remainder must equal the number, and the remainder must be smaller than the divisor.
- Multiply the whole number of groups by the divisor, then add the remainder. Check with multiplication and addition.14 × 3 + 2 = 44
- Compare with 47. The result must be 47, and the remainder must be smaller than 3.44 is not the same as 47; 2 is smaller than 3
- Write Yes or No. Yes if the check works; No if it does not.No
Check. The correct answer is 15 remainder 2.
Watch out. A remainder that is as big as the divisor means the answer is wrong. Find the mistake if the check does not work.
Sharing equally, with pounds and remainders
When money is shared equally, each person gets the same whole amount. Any money left over is the remainder.
Keep the pound sign with each amount when you write the answer.
Key ideas
- Share the whole amount first.
- The remainder is the amount left over.
- Give both parts when the question asks for both.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£58 ÷ 4 = 14 remainder 2
- Read the remainder. The remainder is the money left over.£2 left over
- Write the answer. Give the amount each and the amount left.£14 each, £2 left over
Check. Check: 14 × 4 + 2 = 58.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.47 ÷ 5 = 9 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.9 each and 2 left over
- Write the answer. Give both parts, as the question asks.9 each, 2 left over
Check. Check: 9 × 5 + 2 = 47.
Watch out. The remainder is not shared. Say how many are left.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.47 ÷ 5 = 9 remainder 2
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.2 sweets are left over
- Write the answer. Only full bags count.9 full bags
Check. Check: 9 full bags hold 45 sweets, and 47 - 45 = 2.
Watch out. Round down when only full groups are wanted.
Watch out
Watch out. Do not share the remainder. It is the amount left, not an extra share.
Exam tip
Grown-up tip. Use coins or counters. Share them into equal piles, and count what is left on the table.
Exercise 5E Practice: sharing money and problems
Non-calculatorMethod. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.70 ÷ 5 = 14
- Read the answer and the remainder. The whole number is each share; the remainder is left over.14 each and 0 left over
- Write the answer. Give both parts, as the question asks.14 each, none left over
Check. Check: 14 × 5 + 0 = 70.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£52 ÷ 7 = 7 remainder 3
- Read the remainder. The remainder is the money left over.£3 left over
- Write the answer. Give the amount each and the amount left.£7 each, £3 left over
Check. Check: 7 × 7 + 3 = 52.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.85 ÷ 8 = 10 remainder 5
- Read the answer and the remainder. The whole number is each share; the remainder is left over.10 each and 5 left over
- Write the answer. Give both parts, as the question asks.10 each, 5 left over
Check. Check: 10 × 8 + 5 = 85.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.18 ÷ 9 = 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.2 each and 0 left over
- Write the answer. Give both parts, as the question asks.2 each, none left over
Check. Check: 2 × 9 + 0 = 18.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.79 ÷ 4 = 19 remainder 3
- Read the answer and the remainder. The whole number is each share; the remainder is left over.19 each and 3 left over
- Write the answer. Give both parts, as the question asks.19 each, 3 left over
Check. Check: 19 × 4 + 3 = 79.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.59 ÷ 3 = 19 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.19 each and 2 left over
- Write the answer. Give both parts, as the question asks.19 each, 2 left over
Check. Check: 19 × 3 + 2 = 59.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.29 ÷ 9 = 3 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.3 each and 2 left over
- Write the answer. Give both parts, as the question asks.3 each, 2 left over
Check. Check: 3 × 9 + 2 = 29.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.28 ÷ 5 = 5 remainder 3
- Read the answer and the remainder. The whole number is each share; the remainder is left over.5 each and 3 left over
- Write the answer. Give both parts, as the question asks.5 each, 3 left over
Check. Check: 5 × 5 + 3 = 28.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£94 ÷ 9 = 10 remainder 4
- Read the remainder. The remainder is the money left over.£4 left over
- Write the answer. Give the amount each and the amount left.£10 each, £4 left over
Check. Check: 10 × 9 + 4 = 94.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.76 ÷ 5 = 15 remainder 1
- Read the answer and the remainder. The whole number is each share; the remainder is left over.15 each and 1 left over
- Write the answer. Give both parts, as the question asks.15 each, 1 left over
Check. Check: 15 × 5 + 1 = 76.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.24 ÷ 9 = 2 remainder 6
- Read the answer and the remainder. The whole number is each share; the remainder is left over.2 each and 6 left over
- Write the answer. Give both parts, as the question asks.2 each, 6 left over
Check. Check: 2 × 9 + 6 = 24.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£12 ÷ 8 = 1 remainder 4
- Read the remainder. The remainder is the money left over.£4 left over
- Write the answer. Give the amount each and the amount left.£1 each, £4 left over
Check. Check: 1 × 8 + 4 = 12.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.94 ÷ 3 = 31 remainder 1
- Read the answer and the remainder. The whole number is each share; the remainder is left over.31 each and 1 left over
- Write the answer. Give both parts, as the question asks.31 each, 1 left over
Check. Check: 31 × 3 + 1 = 94.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.20 ÷ 6 = 3 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.3 each and 2 left over
- Write the answer. Give both parts, as the question asks.3 each, 2 left over
Check. Check: 3 × 6 + 2 = 20.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£79 ÷ 3 = 26 remainder 1
- Read the remainder. The remainder is the money left over.£1 left over
- Write the answer. Give the amount each and the amount left.£26 each, £1 left over
Check. Check: 26 × 3 + 1 = 79.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.76 ÷ 4 = 19
- Read the answer and the remainder. The whole number is each share; the remainder is left over.19 each and 0 left over
- Write the answer. Give both parts, as the question asks.19 each, none left over
Check. Check: 19 × 4 + 0 = 76.
Watch out. The remainder is not shared. Say how many are left.
Chapter summary
| Skill | Method |
|---|---|
| Short division | Share the tens, then bring down the ones; write each answer above |
| Remainders | Write as: answer remainder r; the remainder is smaller than the divisor |
| What a remainder means | Round up for buses; round down for full bags; or say what is left |
| Estimate and check | Use the table to bracket the answer; check by groups × divisor + remainder |
Can you…?
- I can use the short method to divide a two-digit number by a one-digit number
- I can write an answer with a remainder
- I can decide what a remainder means in a problem and round up or down
- I can estimate with the tables and check by multiplying back
- I can solve sharing problems with remainders, including money
Key terms
- divisor
- the number you divide by
- remainder
- the amount left over when a number does not share exactly
- short division
- a written method that divides one column at a time
- round up
- increase the answer to the next whole number
Exercise 5Z Check-up
Non-calculatorMethod. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.20 ÷ 6 = 3 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.3 each and 2 left over
- Write the answer. Give both parts, as the question asks.3 each, 2 left over
Check. Check: 3 × 6 + 2 = 20.
Watch out. The remainder is not shared. Say how many are left.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 6 tens cannot make a group of 8 on their own, so use all of 64.64 is the number to share
- Share 64 into groups of 8. How many groups of 8 are in 64?64 ÷ 8 = 8 r 0
- Write the answer. The remainder is what is left over; write it after the answer.8
Check. Check: 8 × 8 + 0 = 64.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 8 tens into groups of 3.8 ÷ 3 = 2 r 2
- Bring down the ones. The tens left over become ten ones each.2 tens and 1 ones = 21
- Share 21 into groups of 3. How many groups of 3 are in 21?21 ÷ 3 = 7 r 0
- Write the answer. The remainder is what is left over; write it after the answer.27
Check. Check: 27 × 3 + 0 = 81.
Watch out. The remainder must be smaller than the number you divide by.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.93 ÷ 5 = 18 remainder 3
- Read the answer and the remainder. The whole number is each share; the remainder is left over.18 each and 3 left over
- Write the answer. Give both parts, as the question asks.18 each, 3 left over
Check. Check: 18 × 5 + 3 = 93.
Watch out. The remainder is not shared. Say how many are left.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 5 tens cannot make a group of 9 on their own, so use all of 54.54 is the number to share
- Share 54 into groups of 9. How many groups of 9 are in 54?54 ÷ 9 = 6 r 0
- Write the answer. The remainder is what is left over; write it after the answer.6
Check. Check: 6 × 9 + 0 = 54.
Watch out. The remainder must be smaller than the number you divide by.
Method. Use the short method. Share the tens first, then the ones with what is left.
- Share the tens. Share the 4 tens into groups of 2.4 ÷ 2 = 2 r 0
- Bring down the ones. The tens left over become ten ones each.0 tens and 2 ones = 2
- Share 2 into groups of 2. How many groups of 2 are in 2?2 ÷ 2 = 1 r 0
- Write the answer. The remainder is what is left over; write it after the answer.21
Check. Check: 21 × 2 + 0 = 42.
Watch out. The remainder must be smaller than the number you divide by.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 3 are in 74. Use the times table of the divisor.24 groups of 3 = 72
- Find what is left over. The remainder is the number left after the groups.74 - 72 = 2
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.24 × 3 + 2 = 72 + 2 = 74
- Write the answer. This is the answer with its remainder.24 remainder 2
Check. Check: 24 × 3 + 2 = 74.
Watch out. If the check does not give the number you started with, divide again.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 94 children in buses of 9.94 ÷ 9 = 10 remainder 4
- Decide what the remainder means. The children left over still need a bus, so round up.4 children left over need 1 more bus
- Write the answer. Round up when the leftover people still need a place.11 buses
Check. Check: 11 buses hold 99 children, which is at least 94.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£51 ÷ 5 = 10 remainder 1
- Read the remainder. The remainder is the money left over.£1 left over
- Write the answer. Give the amount each and the amount left.£10 each, £1 left over
Check. Check: 10 × 5 + 1 = 51.
Watch out. Keep the pound sign with each amount.
Method. Find the multiple of the divisor that is just below the number. It tells you the whole number of groups.
- Count in 9s. Keep counting until you go past 72.9, 18, ... up to 72
- Find the largest multiple. It is the last multiple that is not more than the number.72 is not more than 72
- Write the multiple. This is the number that helps you find the division.72
Check. Check: 8 × 9 = 72, and 72 is not more than 72.
Watch out. Do not pick the multiple just above the number; it is more than the number.
Total 19 marks. Allow about 19 minutes.
Exercise 5X Practice test questions
Non-calculatorMethod. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 8 are in 60. Use the times table of the divisor.7 groups of 8 = 56
- Find what is left over. The remainder is the number left after the groups.60 - 56 = 4
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.7 × 8 + 4 = 56 + 4 = 60
- Write the answer. This is the answer with its remainder.7 remainder 4
Check. Check: 7 × 8 + 4 = 60.
Watch out. If the check does not give the number you started with, divide again.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.77 ÷ 6 = 12 remainder 5
- Read the answer and the remainder. The whole number is each share; the remainder is left over.12 each and 5 left over
- Write the answer. Give both parts, as the question asks.12 each, 5 left over
Check. Check: 12 × 6 + 5 = 77.
Watch out. The remainder is not shared. Say how many are left.
Method. Share the whole pounds first; the remainder is what is left over.
- Share the money into equal amounts. Each person gets the same whole pounds.£47 ÷ 5 = 9 remainder 2
- Read the remainder. The remainder is the money left over.£2 left over
- Write the answer. Give the amount each and the amount left.£9 each, £2 left over
Check. Check: 9 × 5 + 2 = 47.
Watch out. Keep the pound sign with each amount.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.87 ÷ 5 = 17 remainder 2
- Read the answer and the remainder. The whole number is each share; the remainder is left over.17 each and 2 left over
- Write the answer. Give both parts, as the question asks.17 each, 2 left over
Check. Check: 17 × 5 + 2 = 87.
Watch out. The remainder is not shared. Say how many are left.
Method. Round up when the remainder still needs one more group.
- Divide to find the full buses and what is left. 48 children in buses of 3.48 ÷ 3 = 16
- Decide what the remainder means. The children left over still need a bus, so round up.No children are left over
- Write the answer. Round up when the leftover people still need a place.16 buses
Check. Check: 16 buses hold 48 children, which is at least 48.
Watch out. Round up when the leftover still needs a place. Do not give the answer with a remainder.
Method. Share the whole number first; the remainder is what is left over.
- Share the pencils into equal groups. Each child gets the same number.81 ÷ 3 = 27
- Read the answer and the remainder. The whole number is each share; the remainder is left over.27 each and 0 left over
- Write the answer. Give both parts, as the question asks.27 each, none left over
Check. Check: 27 × 3 + 0 = 81.
Watch out. The remainder is not shared. Say how many are left.
Method. Use the short method. Share the tens first, then the ones with what is left.
- The tens are fewer than the number of groups. 7 tens cannot make a group of 8 on their own, so use all of 70.70 is the number to share
- Share 70 into groups of 8. How many groups of 8 are in 70?70 ÷ 8 = 8 r 6
- Write the answer. The remainder is what is left over; write it after the answer.8 remainder 6
Check. Check: 8 × 8 + 6 = 70.
Watch out. The remainder must be smaller than the number you divide by.
Method. Divide, then check: answer × divisor + remainder = the number we started with.
- Find how many groups of 3 are in 65. Use the times table of the divisor.21 groups of 3 = 63
- Find what is left over. The remainder is the number left after the groups.65 - 63 = 2
- Check with multiplication and addition. Multiply the answer by the divisor, then add the remainder.21 × 3 + 2 = 63 + 2 = 65
- Write the answer. This is the answer with its remainder.21 remainder 2
Check. Check: 21 × 3 + 2 = 65.
Watch out. If the check does not give the number you started with, divide again.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.43 ÷ 4 = 10 remainder 3
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.3 sweets are left over
- Write the answer. Only full bags count.10 full bags
Check. Check: 10 full bags hold 40 sweets, and 43 - 40 = 3.
Watch out. Round down when only full groups are wanted.
Method. Round down when the remainder cannot make another full group.
- Divide to find the full bags. Each full bag takes the number of sweets in it.39 ÷ 5 = 7 remainder 4
- Decide what the remainder means. The sweets left over do not make a full bag, so round down.4 sweets are left over
- Write the answer. Only full bags count.7 full bags
Check. Check: 7 full bags hold 35 sweets, and 39 - 35 = 4.
Watch out. Round down when only full groups are wanted.