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The number 56 contains 5 tens and 6 ones.

Year 2 Numbers - Place Value and Partitioning

Build numbers with tens and ones. Partition, swap digits, and read each place value. Use blocks or drawings to show how numbers change when tens and ones move.

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Fascinating Fact:

Swap digits, new value. 24 is 2 tens and 4 ones. 42 is 4 tens and 2 ones. The value changes.

In KS1 Maths, pupils partition two-digit numbers into tens and ones, then put them back together to make the whole. This builds strong place value ideas for comparing and calculating.

Key Terms

Place value: What a digit is worth because of where it sits, such as tens or ones.
Partition: Split a number into parts, for example 37 into 3 tens and 7 ones.
Expanded form: A number written as tens plus ones, for example 37 = 30 + 7.

Practise partitioning with the Numeracy Game to build quick, confident place value skills.

Frequently Asked Questions (Click to see answers)

How do I partition a two-digit number in KS1?

Count the tens and ones. For 58, there are 5 tens and 8 ones. In expanded form, 58 = 50 + 8.

What does expanded form mean for place value?

Expanded form shows the value of each digit added together. For 46, write 40 + 6 to make the total.

Does swapping digits always change the number’s size?

Yes. Swapping digits changes which is tens and which is ones. 24 and 42 use the same digits but have different values.

Try These Related Quizzes

Question 1

How could you partition 28?

2 + 8

10 + 18

20 + 80

10 + 28

There are 2 tens in 28

Question 2

How could you partition 56?

15 + 16

5 + 6

50 + 60

20 + 36

The 5 tens in 56 could be split into 20 and 30

Question 3

What is the value of the 6 in 46?

600

46 can be partitioned into 4 tens and 6 ones

Question 4

What is 78 - 20?

There are 7 tens in 78 - taking away 2 of them leaves 5

Question 5

How could you partition 47?

14 + 17

4 + 7

70 + 4

40 + 7

47 is 4 tens and 7 ones

Question 6

What is 69 - 30?

There are 6 tens in 69 - taking away 3 of them leaves 3

Question 7

What is the value of the 3 in 35?

300

35 can be partitioned into 30 and 5

Question 8

How could you partition 25?

10 + 10

50 + 2

20 + 5

2 + 5

25 is 2 tens and 5 ones

Question 9

How could you partition 46?

10 + 10 + 10 + 10 + 6

4 + 6

40 + 6 + 6

4 + 4 + 4 + 6

There are 4 tens in 46

Question 10

How could you partition 18?

1 + 8

10 + 8

80 + 1

18 + 8

18 is a ten and 8 ones

Author: Angela Smith (Primary School Teacher & KS1 Quiz Writer)

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