Practice papers: arithmetic
By the end of this chapter you will be able to
- Work through a full practice paper without a calculator, and check the working
- Use the feedback sheet to find which statements need more practice
- Show a written check for a problem with more than one step
- Manage time across a paper, using the practice guide
You should already know
- Chapters 1 to 8 of this book
Where this leads
- Year 6 maths for the full explanations of each topic
KS2 SATs practice for arithmetic (Year 6). Original questions in the style of the national tests. Content: Paper 1 (non-calculator): arithmetic and written methods drawn from chapters 1 to 5 and 7, in rising difficulty, Paper 2 (non-calculator): algebra, measures and conversions drawn from chapters 6 and 8, with two problems that need a written check, A feedback sheet names the statement each item tests, A timing guide: 30 minutes for Paper 1 and 40 minutes for Paper 2, as a practice guide only.
Exercise P Do you remember?
Non-calculatorMethod. Use a times table fact.
- Recall the fact. Four nines are 36.36
- Write the answer. 36
Check. 9 × 4 = 36. ✓
Method. Halve 18.
- Halve. 18 ÷ 2 = 9.9
- Write the answer. 9
Check. 2 × 9 = 18. ✓
Method. Add the thousands, then the rest.
- Thousands. 2,000 + 1,000 = 3,000.3,000
- Rest. 500 + 750 = 1,250.4,250
- Write the answer. 4,250
Check. 4,250 - 1,750 = 2,500. ✓
Method. Multiply before you add.
- Multiply. 4 × 2 = 8.3 + 8
- Add. 3 + 8 = 11.11
- Write the answer. 11
Check. Adding first would give 14, which is wrong. ✓
Method. Look at the hundreds digit.
- Look at the hundreds digit. The hundreds digit is 4, so round down.6,000
- Write the answer. 6,000
Check. 6,000 is nearer than 7,000. ✓
Paper 1, part A (items 1 to 12)
How to use this paper
Paper 1 has 24 items in two parts, and it draws on Chapters 1 to 5 and 7. Aim to finish in about 30 minutes. This is a practice guide, not the official timing.
Show your working on paper. Check each answer with an estimate or the opposite operation.
Key ideas
- Work through the items in order, and check each one.
- Use the working you learned in Chapters 1 to 5 and 7.
- Every answer is written in the form the question asks for.
Method. Use partial products, one for each digit of 24.
- Multiply by the ones digit, 4 (4). Write the partial product.3,056 × 4 = 12,224
- Multiply by the tens digit, 2 (20). Write the partial product.3,056 × 20 = 61,120
- Add the partial products. Add them to get the answer.12,224 + 61,120 = 73,344
- Write the answer. 73,344
Check. About 3,000 × 24 = 72,000, close to 73,344. ✓
Method. Divide one digit at a time from the left.
- Bring down the next digit to make 4. 8 goes into 4 0 times.4 < 8, so 0, remainder 4
- Bring down the next digit to make 41. 8 goes into 41 5 times.41 - 40 = 1
- Bring down the next digit to make 15. 8 goes into 15 1 time.15 - 8 = 7
- Bring down the next digit to make 72. 8 goes into 72 9 times.72 - 72 = 0
- Write the answer. 519
Check. 519 × 8 = 4,152. ✓
Method. Find one fifth, then multiply by 3.
- Find one fifth. 45 ÷ 5 = 9.9
- Multiply by 3. 9 × 3 = 27.27
- Write the answer. 27
Check. 27 ÷ 3 = 9, and 9 × 5 = 45. ✓
Exercise 9A Paper 1, part A
Non-calculatorMethod. Add the thousands, then the rest.
- Add the thousands. Add the big parts first.3,000 + 2,000 = 5,000
- Add the rest. Add the smaller parts.406 + 579 = 985
- Put the parts together. Add the two totals.5,985
- Write the answer. 5,985
Check. 5,985 - 2,579 = 3,406. ✓
Method. Take away 3,000 first, then take away the rest.
- Take away 3,000. 8,000 - 3,000 = 5,000.5,000
- Take away 462. 5,000 - 462 = 4,538.4,538
- Write the answer. 4,538
Check. 4,538 + 3,462 = 8,000. ✓
Method. Split 14 into 10 and 4.
- Multiply the tens. 10 × 6 = 60.60
- Multiply the ones and add. 4 × 6 = 24, and 60 + 24 = 84.84
- Write the answer. 84
Check. 84 ÷ 6 = 14. ✓
Method. Multiply each column from the right, carrying where needed.
- Multiply by the ones digit, 7 (7). Write the partial product.326 × 7 = 2,282
- Add the partial products. Add them to get the answer.2,282 = 2,282
- Write the answer. 2,282
Check. About 300 × 7 = 2,100, close to 2,282. ✓
Method. Divide one digit at a time from the left.
- Bring down the next digit to make 4. 8 goes into 4 0 times.4 < 8, so 0, remainder 4
- Bring down the next digit to make 41. 8 goes into 41 5 times.41 - 40 = 1
- Bring down the next digit to make 15. 8 goes into 15 1 time.15 - 8 = 7
- Bring down the next digit to make 72. 8 goes into 72 9 times.72 - 72 = 0
- Write the answer. 519
Check. 519 × 8 = 4,152. ✓
Method. Find the column of the 6, then multiply.
- Find the column. The 6 is in the ten thousands column.ten thousands
- Multiply. 6 × 10,000 = 60,000.60,000
- Write the answer. 60,000
Check. The 6 is in the ten thousands column. ✓
Method. Look at the hundreds digit.
- Look at the hundreds digit. The hundreds digit is 6, so round up.46,000
- Write the answer. 46,000
Check. 46,000 is nearer than 45,000. ✓
Method. Write 3/4 as eighths, then add.
- Make the bottoms the same. 3/4 = 6/8.6/8
- Add the tops. 6/8 + 1/8 = 7/8.7/8
- Write the answer. 7/8
Check. 7/8 - 1/8 = 6/8 = 3/4. ✓
Method. Multiply as whole numbers, then put the point back.
- Ignore the point. 6 × 5 = 30.30
- Put the point back. One decimal place, so 3.0.3
- Write the answer. 3
Check. 3 ÷ 5 = 0.6. ✓
Method. Find 1% first, then multiply by 25.
- Find 1%. 360 ÷ 100 = 3.6.3.6
- Multiply by 25. 3.6 × 25 = 90.90
- Write the answer. 90
Check. A quarter of 360 is 90. ✓
Method. Share the pupils in the ratio 3 : 5.
- Add the parts. 3 + 5 = 8 parts.8
- Find one part. 40 ÷ 8 = 5.5
- Find the boys. 3 × 5 = 15.15
- Write the answer. 15
Check. 15 boys and 25 girls make 40. ✓
Method. Multiply before you add.
- Multiply. 3 × 4 = 12.7 + 12
- Add. 7 + 12 = 19.19
- Write the answer. 19
Check. Adding first would give 40, which is wrong. ✓
Paper 1, part B (items 13 to 24)
Rule
For longer calculations, use a written method and check your answer with an estimate or the opposite operation. Decimals and fractions must be written in the form the question asks for.
Key ideas
- Use the written method you practised in Chapters 1 to 5.
- Check every answer with an estimate.
- Decide whether a question wants a decimal, a fraction or a mixed number.
Method. Work out 246 × 36, then put the decimal point back.
- Multiply by the ones digit, 6 (6). Write the partial product.246 × 6 = 1,476
- Multiply by the tens digit, 3 (30). Write the partial product.246 × 30 = 7,380
- Add the partial products. Add them to get the answer.1,476 + 7,380 = 8,856
- Put the point back. The decimal has two places, so the answer has two places.88.56
- Write the answer. 88.56
Check. About 2.5 × 36 = 90, close to 88.56. ✓
Method. Divide one digit at a time, then write the remainder.
- Bring down the next digit to make 1. 36 goes into 1 0 times.1 < 36, so 0, remainder 1
- Bring down the next digit to make 10. 36 goes into 10 0 times.10 < 36, so 0, remainder 10
- Bring down the next digit to make 100. 36 goes into 100 2 times.100 - 72 = 28
- Bring down the next digit to make 280. 36 goes into 280 7 times.280 - 252 = 28
- Write the answer. 27 remainder 28
Check. 36 × 27 + 28 = 1,000. ✓
Method. Take away 1,000,000 first, then take away the rest.
- Take away 1,000,000. 5,000,000 - 1,000,000 = 4,000,000.4,000,000
- Take away 234,567. 4,000,000 - 234,567 = 3,765,433.3,765,433
- Write the answer. 3,765,433
Check. 3,765,433 + 1,234,567 = 5,000,000. ✓
Exercise 9B Paper 1, part B
Non-calculatorMethod. Use partial products.
- Multiply by the ones digit, 4 (4). Write the partial product.3,056 × 4 = 12,224
- Multiply by the tens digit, 2 (20). Write the partial product.3,056 × 20 = 61,120
- Add the partial products. Add them to get the answer.12,224 + 61,120 = 73,344
- Write the answer. 73,344
Check. About 3,000 × 24 = 72,000, close to 73,344. ✓
Method. Take away 1,000,000, then the rest.
- Take away 1 million. 5,000,000 - 1,000,000 = 4,000,000.4,000,000
- Take away the rest. 4,000,000 - 234,567 = 3,765,433.3,765,433
- Write the answer. 3,765,433
Check. 3,765,433 + 1,234,567 = 5,000,000. ✓
Method. Divide 47.5 by 5.
- Divide. 47 ÷ 5 = 9 remainder 2, then 25 ÷ 5 = 5.9.5
- Write the answer. 9.5
Check. 9.5 × 5 = 47.5. ✓
Method. Work out 246 × 36, then put the decimal point back.
- Multiply by the ones digit, 6 (6). Write the partial product.246 × 6 = 1,476
- Multiply by the tens digit, 3 (30). Write the partial product.246 × 30 = 7,380
- Add the partial products. Add them to get the answer.1,476 + 7,380 = 8,856
- Put the point back. Two decimal places.88.56
- Write the answer. 88.56
Check. About 2.5 × 36 = 90, close to 88.56. ✓
Method. Keep the top, and multiply the bottom by 4.
- Multiply the bottom. 2 × 4 = 8.1/8
- Write the answer. 1/8
Check. 1/8 × 4 = 1/2. ✓
Method. Find the parts, then one part.
- Add the parts. 5 + 3 = 8.8
- Find one part. 96 ÷ 8 = 12.12
- Find the shares. 5 × 12 = 60 and 3 × 12 = 36.60 and 36
- Write the answer. 60 and 36
Check. 60 + 36 = 96. ✓
Method. Multiply by 1000 moves the digits three places left.
- Move the digits. 0.7 → 700.700
- Write the answer. 700
Check. 700 ÷ 1000 = 0.7. ✓
Method. Look at the third decimal digit.
- Look at the third decimal digit. The digit is 5, so round up.8.47
- Write the answer. 8.47
Check. 8.47 is nearer than 8.46. ✓
Method. Change to improper fractions, then add.
- Improper fractions. 6 2/5 = 32/5 and 1 3/4 = 7/4.32/5 and 7/4
- Common denominator. 32/5 = 128/20 and 7/4 = 35/20.128/20 and 35/20
- Add and change back. 128 + 35 = 163, so 163/20 = 8 3/20.8 3/20
- Write the answer. 8 3/20
Check. 8 3/20 is close to 6.4 + 1.75 = 8.15. ✓
Method. Divide one digit at a time.
- Bring down the next digit to make 1. 36 goes into 1 0 times.1 < 36, so 0, remainder 1
- Bring down the next digit to make 10. 36 goes into 10 0 times.10 < 36, so 0, remainder 10
- Bring down the next digit to make 100. 36 goes into 100 2 times.100 - 72 = 28
- Bring down the next digit to make 280. 36 goes into 280 7 times.280 - 252 = 28
- Write the answer. 27 remainder 28
Check. 36 × 27 + 28 = 1,000. ✓
Method. Brackets first, then multiply and divide, then add.
- Brackets. 18 - 6 = 12.12 × 4 ÷ 8 + 3
- Multiply and divide. 12 × 4 = 48 and 48 ÷ 8 = 6.6 + 3
- Add. 6 + 3 = 9.9
- Write the answer. 9
Check. Without the brackets the answer is different. ✓
Method. Find the cakes left, then share them.
- Find the cakes eaten. 24 ÷ 3 = 8 are eaten.8
- Find the cakes left. 24 - 8 = 16.16
- Share. 16 ÷ 4 = 4.4
- Write the answer. 4
Check. 4 × 4 = 16 cakes. ✓
Paper 2, part A (items 1 to 12)
How to use this paper
Paper 2 has 25 items in two parts, and it draws on Chapters 6 and 8. Aim to finish in about 40 minutes. This is a practice guide, not the official timing.
Two items in part B need a written check. Write the working for them.
Key ideas
- Replace letters with numbers carefully when you substitute.
- A sequence goes up or down by the same step each time.
- Convert units first, then calculate.
Method. Replace the letters, then multiply and add.
- Substitute. 3 × 4 + 2 × 5.3 × 4 + 2 × 5
- Multiply. 12 + 10.12 + 10
- Add. 12 + 10 = 22.22
- Write the answer. 22
Check. 22 - 10 = 12 = 3 × 4. ✓
Method. Find the step, then add it.
- Find the step. 11 - 7 = 4.4
- Add the step. 19 + 4 = 23.23
- Write the answer. 23
Check. 23 - 19 = 4. ✓
Method. Multiply by 1000.
- Use the fact. 1 kg = 1000 g.1000 g
- Multiply. 2.5 × 1000 = 2,500.2,500 g
- Write the answer. 2,500 g
Check. 2,500 ÷ 1000 = 2.5 kg. ✓
Exercise 9C Paper 2, part A
Non-calculatorMethod. Replace a and b, then multiply and add.
- Substitute. 3 × 4 + 2 × 5.3 × 4 + 2 × 5
- Add. 12 + 10 = 22.22
- Write the answer. 22
Check. 22 - 10 = 12. ✓
Method. Write the cost in words, then use letters.
- Write in words. Cost = 4 × trips + 3.4n + 3
- Use letters. C = 4n + 3.C = 4n + 3
- Write the answer. C = 4n + 3
Check. If n = 2, C = 11. ✓
Method. Find the step.
- Find the step. Each term goes up by 4.+4
- Add the step. 19 + 4 = 23.23
- Write the answer. 23
Check. 23 - 4 = 19. ✓
Method. Find the step between two terms.
- Find the step. 26 - 30 = -4.-4
- Write it in words. Each term is 4 less than the one before.subtract 4
- Write the answer. subtract 4
Check. 18 - 22 = -4. ✓
Method. Take 5 from 13.
- Subtract. 13 - 5 = 8.8
- Write the answer. 8
Check. 5 + 8 = 13. ✓
Method. Divide by 8, then multiply by 5.
- Divide by 8. 40 ÷ 8 = 5.5
- Multiply by 5. 5 × 5 = 25.25 miles
- Write the answer. about 25 miles
Check. 25 miles is about 40 km. ✓
Method. Multiply by 1000.
- Multiply. 2.5 × 1000 = 2,500.2,500 g
- Write the answer. 2,500 g
Check. 2,500 ÷ 1000 = 2.5 kg. ✓
Method. Find the missing sides, then add all six sides.
- Find the missing sides. 6 - 2 = 4 and 8 - 4 = 4.4 and 4
- Add the six sides. 8 + 4 + 4 + 2 + 4 + 6 = 28.28 cm
- Write the answer. 28 cm
Check. 2 × (8 + 6) = 28. ✓
Method. Multiply the length by the width.
- Multiply. 9 × 4 = 36.36 m²
- Write the answer. 36 m²
Check. 36 ÷ 4 = 9. ✓
Method. List each value of a, then find b.
- List the pairs. (1, 11), (2, 10), (3, 9), (4, 8), (5, 7).5 pairs
- Write the answer. 5
Check. Each pair adds to 12. ✓
Method. Multiply by 60.
- Find the minutes. 2 × 60 = 120 and 0.5 × 60 = 30, so 150.150 minutes
- Write the answer. 150 minutes
Check. 150 ÷ 60 = 2.5 hours. ✓
Method. Try y = 0, 1, 2 and 3 and find x each time.
- y = 0. x = 9.(9, 0)
- y = 1. x = 6.(6, 1)
- y = 2. x = 3.(3, 2)
- y = 3. x = 0.(0, 3)
- Write the answer. (9, 0), (6, 1), (3, 2), (0, 3)
Check. Each pair gives 9 in x + 3y. ✓
Paper 2, part B (items 13 to 25) and the feedback sheet
Feedback sheet
| Item | Paper | Statement tested |
|---|---|---|
| 1 to 12 | Paper 1 | Place value, the four operations, fractions, percentages, ratio and the order of operations (Chapters 1 to 5 and 7) |
| 13 to 24 | Paper 1 | Long multiplication and division, decimals, rounding, sharing in a ratio, mixed numbers and the order of operations |
| 1 to 12 | Paper 2 | Substitution, formulae in words and letters, linear sequences, missing numbers, combinations, conversions and perimeter |
| 13 to 25 | Paper 2 | Two unknowns, sequences, combinations, metric conversions, time, perimeter and written checks |
Use this sheet to choose which chapter to revisit. Any item you got wrong shows which statement needs more practice.
Key ideas
- Show the working for multi-step problems.
- Check each answer with the opposite operation.
- Use the feedback sheet to find your next step.
Method. Replace the letters, then multiply and add.
- Substitute. 2 × 7 + 3 × 2.2 × 7 + 3 × 2
- Multiply. 14 + 6.14 + 6
- Add. 14 + 6 = 20.20
- Write the answer. 20
Check. 20 - 6 = 14 = 2 × 7. ✓
Method. Subtract the first equation from the second.
- Subtract. (2x + y) - (x + y) = 15 - 9, so x = 6.x = 6
- Find y. 6 + y = 9, so y = 3.y = 3
- Write the answer. x = 6 and y = 3
Check. 2 × 6 + 3 = 15. ✓
Method. Find the step, then add it nine times to the first term.
- Find the step. 17 - 12 = 5.5
- Add nine steps. 12 + 9 × 5 = 12 + 45.57
- Write the answer. 57
Check. 12 + 45 = 57. ✓
Exercise 9D Paper 2, part B
Non-calculatorMethod. Replace x and y, then multiply and subtract.
- Substitute. 5 × 6 - 2 × 4.5 × 6 - 2 × 4
- Work out. 30 - 8 = 22.22
- Write the answer. 22
Check. 22 + 8 = 30 = 5 × 6. ✓
Method. Replace a and c, then work out each part.
- Substitute. 5 × 2 + 3 × 7.5 × 2 + 3 × 7
- Work out. 10 + 21 = 31.31
- Write the answer. £31
Check. 31 - 21 = 10. ✓
Method. Subtract the second equation from the first.
- Subtract. (2x + y) - (x + y) = 15 - 9, so x = 6.x = 6
- Write the answer. 6
Check. 6 + y = 9, so y = 3. ✓
Method. Add the step of 5 nine times.
- Find the step. 17 - 12 = 5.5
- Add nine steps. 12 + 9 × 5 = 57.57
- Write the answer. 57
Check. 57 - 12 = 45 = 9 × 5. ✓
Method. Multiply by 1000.
- Multiply. 3.6 × 1000 = 3,600.3,600 m
- Write the answer. 3,600 m
Check. 3,600 ÷ 1000 = 3.6 km. ✓
Method. Divide by 5, then multiply by 8.
- Divide by 5. 15 ÷ 5 = 3.3
- Multiply by 8. 3 × 8 = 24.24 km
- Write the answer. about 24 km
Check. 24 km is about 15 miles. ✓
Method. List the factor pairs of 36 with a smaller than b.
- List the pairs. (1, 36), (2, 18), (3, 12), (4, 9).4 pairs
- Write the answer. 4
Check. Each pair multiplies to 36. ✓
Method. Go through the number of 10p coins in order.
- Try 0 ten-pence coins. 15p with 5p coins: 3 coins.(3, 0)
- Try 1 ten-pence coin. 5p left, which is 1 five-pence coin.(1, 1)
- Count. There are 2 ways.2 ways
- Write the answer. 2 ways
Check. 3 × 5 = 15 and 10 + 5 = 15. ✓
Method. Multiply the side by itself.
- Multiply. 11 × 11 = 121.121 cm²
- Write the answer. 121 cm²
Check. 121 ÷ 11 = 11. ✓
Method. Change the litres to millilitres, then divide by 250.
- Change to ml. 2.5 litres = 2,500 ml.2,500 ml
- Divide. 2,500 ÷ 250 = 10.10
- Write the answer. 10
Check. 10 × 250 = 2,500. ✓
Method. Add the hours, then the minutes, carrying past 60.
- Add 2 hours. 10:35 + 2 hours = 12:35.12:35
- Add 50 minutes. 12:35 + 50 minutes = 13:25, since 35 + 50 = 85 and 85 - 60 = 25.13:25
- Write the answer. 13:25
Check. 13:25 - 2 h 50 min = 10:35. ✓
Method. Find the missing sides, then add all six sides.
- Find the missing lengths. The corner is 6 cm by 4 cm, so the sides are 5 cm and 8 cm.9 - 4 = 5, 14 - 6 = 8
- List the six sides. An L-shape has six straight sides.14 cm, 5 cm, 6 cm, 4 cm, 8 cm, 9 cm
- Add the sides. Add every side to get the perimeter.14 + 5 + 6 + 4 + 8 + 9 = 46
- Write the answer. 46 m
Check. 2 × (14 + 9) = 46. ✓
Method. Multiply 36 by 24 with partial products.
- Multiply by the ones digit, 4 (4). Write the partial product.36 × 4 = 144
- Multiply by the tens digit, 2 (20). Write the partial product.36 × 20 = 720
- Add the partial products. Add them to get the answer.144 + 720 = 864
- Write the answer. 864
Check. About 40 × 25 = 1,000, close to 864. ✓
Chapter summary
| Skill | Method |
|---|---|
| Paper 1 | Non-calculator arithmetic from Chapters 1 to 5 and 7, in rising difficulty; about 30 minutes. |
| Paper 2 | Non-calculator algebra and measures from Chapters 6 and 8; about 40 minutes. |
| Written check | Write the working for multi-step problems, and check with an estimate. |
| Feedback sheet | Each item names the statement it tests, so you can revisit that chapter. |
| Timing | The times are a practice guide only, not the official test. |
Can you…?
- I can work through a full practice paper without a calculator
- I can show a written check for a multi-step problem
- I can use the feedback sheet to choose my next practice
- I know which items test which statements
Key terms
- practice guide
- a guide to pace and timing, not a rule
- written check
- working that shows how an answer was checked
- feedback sheet
- a list of the statements each item tests
Exercise 9Z Check-up
Non-calculatorMethod. Add the thousands, then the rest.
- Thousands. 4,000 + 3,000 = 7,000.7,000
- Rest. 600 + 500 = 1,100.8,100
- Write the answer. 8,100
Check. 8,100 - 500 = 7,600. ✓
Method. Split 12 into 10 and 2.
- Multiply. 10 × 9 = 90 and 2 × 9 = 18.108
- Write the answer. 108
Check. 108 ÷ 9 = 12. ✓
Method. Find a quarter, then multiply by 3.
- Quarter. 60 ÷ 4 = 15.15
- Multiply. 15 × 3 = 45.45
- Write the answer. 45
Check. 45 ÷ 3 = 15. ✓
Method. Multiply by 100.
- Multiply. 0.45 × 100 = 45.45%
- Write the answer. 45%
Check. 45 ÷ 100 = 0.45. ✓
Method. Share 45 into 9 parts.
- Parts. 4 + 5 = 9.9
- One part. 45 ÷ 9 = 5.5
- Bigger share. 5 × 5 = 25.25
- Write the answer. 25
Check. 20 + 25 = 45. ✓
Method. Replace p, then multiply and subtract.
- Substitute. 6 × 5 - 2.6 × 5 - 2
- Work out. 30 - 2 = 28.28
- Write the answer. 28
Check. 28 + 2 = 30. ✓
Method. Find the step, then subtract it.
- Step. 37 - 40 = -3.-3
- Subtract. 31 - 3 = 28.28
- Write the answer. 28
Check. 28 + 3 = 31. ✓
Method. Multiply by 1000.
- Multiply. 1.75 × 1000 = 1,750.1,750 g
- Write the answer. 1,750 g
Check. 1,750 ÷ 1000 = 1.75. ✓
Method. Brackets, then divide, then add.
- Brackets. 25 - 9 = 16.16 ÷ 4 + 3
- Divide. 16 ÷ 4 = 4.4 + 3
- Add. 4 + 3 = 7.7
- Write the answer. 7
Check. Working left to right would give a different answer. ✓
Total 19 marks. Allow about 19 minutes.
Exercise 9X Practice test questions
Non-calculatorMethod. Multiply column by column from the right.
- Multiply by the ones digit, 5 (5). Write the partial product.2,046 × 5 = 10,230
- Add the partial products. Add them to get the answer.10,230 = 10,230
- Write the answer. 10,230
Check. 10,230 ÷ 5 = 2,046. ✓
Method. Use partial products.
- Multiply by the ones digit, 6 (6). Write the partial product.73 × 6 = 438
- Multiply by the tens digit, 1 (10). Write the partial product.73 × 10 = 730
- Add the partial products. Add them to get the answer.438 + 730 = 1,168
- Write the answer. 1,168
Check. About 70 × 16 = 1,120, close to 1,168. ✓
Method. Divide one digit at a time.
- Bring down the next digit to make 1. 18 goes into 1 0 times.1 < 18, so 0, remainder 1
- Bring down the next digit to make 17. 18 goes into 17 0 times.17 < 18, so 0, remainder 17
- Bring down the next digit to make 173. 18 goes into 173 9 times.173 - 162 = 11
- Bring down the next digit to make 114. 18 goes into 114 6 times.114 - 108 = 6
- Write the answer. 96 remainder 6
Check. 18 × 96 + 6 = 1,734. ✓
Method. Replace x with 5, then multiply and subtract.
- Substitute. 4 × 5 - 3.4 × 5 - 3
- Work out. 20 - 3 = 17.17
- Write the answer. 17
Check. 17 + 3 = 20 = 4 × 5. ✓
Method. Find the step.
- Step. 6 - 9 = -3.-3
- Next term. 0 - 3 = -3.-3
- Write the answer. -3
Check. The step is subtract 3. ✓
Method. Multiply by 1000.
- Multiply. 4.2 × 1000 = 4,200.4,200 m
- Write the answer. 4,200 m
Check. 4,200 ÷ 1000 = 4.2. ✓
Method. Divide by 8, then multiply by 5.
- Divide by 8. 56 ÷ 8 = 7.7
- Multiply by 5. 7 × 5 = 35.35 miles
- Write the answer. about 35 miles
Check. 35 miles is about 56 km. ✓
Method. Multiply the length by the width.
- Multiply. 12 × 7 = 84.84 m²
- Write the answer. 84 m²
Check. 84 ÷ 7 = 12. ✓
Method. Share 120 into four parts.
- Parts. 1 + 3 = 4.4
- One part. 120 ÷ 4 = 30.30
- Write the answer. 30
Check. 30 + 90 = 120. ✓
Method. Multiply first, then add and subtract from left to right.
- Multiply. 4 × 6 = 24.15 + 24 - 9
- Add and subtract. 15 + 24 = 39, then 39 - 9 = 30.30
- Write the answer. 30
Check. The answer is 30. ✓
Method. Check the multiplier for each part.
- Multiply. 2 × 2 = 4 and 5 × 2 = 10.4 : 10
- Write the answer. Because 4 : 10 is 2 : 5 with both parts multiplied by 2.
Check. 4 ÷ 2 = 2 and 10 ÷ 2 = 5. ✓