Step-by-step Maths Level 3: Splitting into hundreds, tens and ones
Part of the Step-by-step Maths Level 3 hundreds, tens and ones chapter. Chapter overview · whole chapter on one page
Splitting into hundreds, tens and ones
A 3-digit number has three places. The first digit is the hundreds. The middle digit is the tens. The last digit is the ones.
A zero still has its place. 407 has 4 hundreds, 0 tens and 7 ones.
Key ideas
- Hundreds, tens, ones: read from left to right.
- The digit 0 still has a place.
- Each digit is from 0 to 9.
Method. Put the digits in the place value table, then read each column.
- Write 352 in the place value table. Hundreds, tens and ones each have a column.3 | 5 | 2
- Read each column. The hundreds digit is 3, the tens digit is 5, the ones digit is 2.3 hundreds, 5 tens, 2 ones
- Write the answer. We use the digit in each column.3 hundreds, 5 tens and 2 ones
Check. Put them back: 300 + 50 + 2 = 352.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 407 in the place value table. Hundreds, tens and ones each have a column.4 | 0 | 7
- Read each column. The hundreds digit is 4, the tens digit is 0, the ones digit is 7.4 hundreds, 0 tens, 7 ones
- Write the answer. We use the digit in each column.4 hundreds, 0 tens and 7 ones
Check. Put them back: 400 + 0 + 7 = 407.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Look at the tens column of the place value table.
- Write 684 in a place value table. Each digit goes in its own column.684 = 6 | 8 | 4
- Find the tens column. The tens column is the one for tens.tens digit = 8
- Write the digit. This digit is in the right place.8
Check. The digits of 684 are 6, 8 and 4.
Watch out. The digit is a single number from 0 to 9. It is not the value in the tens place.
Watch out
Watch out. In 407 the tens digit is 0, not 7. Do not skip the empty tens place.
Exam tip
Grown-up tip. Use a place value table with cards. Ask: “How many hundreds? How many tens? How many ones?”
Exercise 2B Practice: hundreds, tens and ones
Non-calculatorMethod. Put the digits in the place value table, then read each column.
- Write 150 in the place value table. Hundreds, tens and ones each have a column.1 | 5 | 0
- Read each column. The hundreds digit is 1, the tens digit is 5, the ones digit is 0.1 hundreds, 5 tens, 0 ones
- Write the answer. We use the digit in each column.1 hundreds, 5 tens and 0 ones
Check. Put them back: 100 + 50 + 0 = 150.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 258 in the place value table. Hundreds, tens and ones each have a column.2 | 5 | 8
- Read each column. The hundreds digit is 2, the tens digit is 5, the ones digit is 8.2 hundreds, 5 tens, 8 ones
- Write the answer. We use the digit in each column.2 hundreds, 5 tens and 8 ones
Check. Put them back: 200 + 50 + 8 = 258.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 569 in the place value table. Hundreds, tens and ones each have a column.5 | 6 | 9
- Read each column. The hundreds digit is 5, the tens digit is 6, the ones digit is 9.5 hundreds, 6 tens, 9 ones
- Write the answer. We use the digit in each column.5 hundreds, 6 tens and 9 ones
Check. Put them back: 500 + 60 + 9 = 569.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 708 in the place value table. Hundreds, tens and ones each have a column.7 | 0 | 8
- Read each column. The hundreds digit is 7, the tens digit is 0, the ones digit is 8.7 hundreds, 0 tens, 8 ones
- Write the answer. We use the digit in each column.7 hundreds, 0 tens and 8 ones
Check. Put them back: 700 + 0 + 8 = 708.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 449 in the place value table. Hundreds, tens and ones each have a column.4 | 4 | 9
- Read each column. The hundreds digit is 4, the tens digit is 4, the ones digit is 9.4 hundreds, 4 tens, 9 ones
- Write the answer. We use the digit in each column.4 hundreds, 4 tens and 9 ones
Check. Put them back: 400 + 40 + 9 = 449.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 102 in the place value table. Hundreds, tens and ones each have a column.1 | 0 | 2
- Read each column. The hundreds digit is 1, the tens digit is 0, the ones digit is 2.1 hundreds, 0 tens, 2 ones
- Write the answer. We use the digit in each column.1 hundreds, 0 tens and 2 ones
Check. Put them back: 100 + 0 + 2 = 102.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 448 in the place value table. Hundreds, tens and ones each have a column.4 | 4 | 8
- Read each column. The hundreds digit is 4, the tens digit is 4, the ones digit is 8.4 hundreds, 4 tens, 8 ones
- Write the answer. We use the digit in each column.4 hundreds, 4 tens and 8 ones
Check. Put them back: 400 + 40 + 8 = 448.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Put the digits in the place value table, then read each column.
- Write 526 in the place value table. Hundreds, tens and ones each have a column.5 | 2 | 6
- Read each column. The hundreds digit is 5, the tens digit is 2, the ones digit is 6.5 hundreds, 2 tens, 6 ones
- Write the answer. We use the digit in each column.5 hundreds, 2 tens and 6 ones
Check. Put them back: 500 + 20 + 6 = 526.
Watch out. A zero digit still has its column. Write 0 tens if there are no tens.
Method. Look at the tens column of the place value table.
- Write 839 in a place value table. Each digit goes in its own column.839 = 8 | 3 | 9
- Find the tens column. The tens column is the one for tens.tens digit = 3
- Write the digit. This digit is in the right place.3
Check. The digits of 839 are 8, 3 and 9.
Watch out. The digit is a single number from 0 to 9. It is not the value in the tens place.
Method. Look at the ones column of the place value table.
- Write 437 in a place value table. Each digit goes in its own column.437 = 4 | 3 | 7
- Find the ones column. The ones column is the one for ones.ones digit = 7
- Write the digit. This digit is in the right place.7
Check. The digits of 437 are 4, 3 and 7.
Watch out. The digit is a single number from 0 to 9. It is not the value in the ones place.
Method. Look at the tens column of the place value table.
- Write 134 in a place value table. Each digit goes in its own column.134 = 1 | 3 | 4
- Find the tens column. The tens column is the one for tens.tens digit = 3
- Write the digit. This digit is in the right place.3
Check. The digits of 134 are 1, 3 and 4.
Watch out. The digit is a single number from 0 to 9. It is not the value in the tens place.
Method. Look at the tens column of the place value table.
- Write 474 in a place value table. Each digit goes in its own column.474 = 4 | 7 | 4
- Find the tens column. The tens column is the one for tens.tens digit = 7
- Write the digit. This digit is in the right place.7
Check. The digits of 474 are 4, 7 and 4.
Watch out. The digit is a single number from 0 to 9. It is not the value in the tens place.
Method. Look at the ones column of the place value table.
- Write 631 in a place value table. Each digit goes in its own column.631 = 6 | 3 | 1
- Find the ones column. The ones column is the one for ones.ones digit = 1
- Write the digit. This digit is in the right place.1
Check. The digits of 631 are 6, 3 and 1.
Watch out. The digit is a single number from 0 to 9. It is not the value in the ones place.
Method. Look at the ones column of the place value table.
- Write 140 in a place value table. Each digit goes in its own column.140 = 1 | 4 | 0
- Find the ones column. The ones column is the one for ones.ones digit = 0
- Write the digit. This digit is in the right place.0
Check. The digits of 140 are 1, 4 and 0.
Watch out. The digit is a single number from 0 to 9. It is not the value in the ones place.
Method. Look at the tens column of the place value table.
- Write 743 in a place value table. Each digit goes in its own column.743 = 7 | 4 | 3
- Find the tens column. The tens column is the one for tens.tens digit = 4
- Write the digit. This digit is in the right place.4
Check. The digits of 743 are 7, 4 and 3.
Watch out. The digit is a single number from 0 to 9. It is not the value in the tens place.
Method. Look at the ones column of the place value table.
- Write 196 in a place value table. Each digit goes in its own column.196 = 1 | 9 | 6
- Find the ones column. The ones column is the one for ones.ones digit = 6
- Write the digit. This digit is in the right place.6
Check. The digits of 196 are 1, 9 and 6.
Watch out. The digit is a single number from 0 to 9. It is not the value in the ones place.