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In the number 123 there are 3 ones, 2 tens and 1 hundred.

Year 2 Numbers - Place Value and Comparing

Compare two-digit numbers using tens and ones. Build with Dienes, read the place value, then decide which number is smaller or bigger with clear, quick checks.

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Fascinating Fact:

Make and compare with Dienes. 52 is 5 ten-sticks and 2 ones. 49 is 4 ten-sticks and 9 ones. Five tens wins.

In KS1 Maths, pupils use place value to compare numbers to 100. Tens tell most of the story, ones finish the job. Dienes blocks make the size of numbers easy to see.

Key Terms

Place value: What a digit is worth because of its position, like tens or ones.
Dienes: Base ten blocks that show tens as sticks and ones as small cubes.
Compare: Decide which number is smaller or bigger by checking tens first, then ones.

Practise comparing with the Numeracy Game to build fast place value skills.

Frequently Asked Questions (Click to see answers)

How do I compare two-digit numbers in KS1?

Look at the tens first. The number with fewer tens is smaller. If tens are the same, compare the ones to decide which is bigger.

What is place value for tens and ones?

Place value shows that the left digit counts tens and the right digit counts ones, so 47 means 4 tens and 7 ones.

How do Dienes blocks help with comparing numbers?

Dienes show amount clearly. You can see which has more ten-sticks or more ones, then choose the greater number with confidence.

Try These Related Quizzes

Question 1

Which numbers are missing?
23, 24, __, 26, __, __

27, 28, 29

24, 25, 26

25, 27, 28

28, 38, 48

Counting up aloud might help here

Question 2

What is the value of the 5 in 57?

5 hundreds

5 ones

5 tens

5 thousands

This column in a number represents the tens

Question 3

Which numbers are missing?
__, 46, __, __

40, 50, 60

46, 47, 48

55, 56, 57

45, 47, 48

Thinking about the numbers on a number line might be useful here

Question 4

What is 67 in words?

Six and seven

Sixty-seven

Sixteen

Seventy

The two words have a hyphen between them

Question 5

What is the value of the 7 in 27?

7 ones

7 tens

7 hundreds

7 thousands

The last digit in a whole number represents ones

Question 6

Which number is the smallest?
16, 61, 66, 11

11 is smaller than the other numbers

Question 7

Put these numbers in order from highest to lowest:
45, 14, 41, 54, 15

54, 45, 41, 15, 14

45, 54, 14, 41, 15

14, 15, 41, 45, 54

15, 45, 54, 14, 41

54 has the highest value, 14 has the lowest value

Question 8

Which numbers come immediately before and after 79?

78 and 80

77 and 78

69 and 89

67 and 76

One less than 79 is 78 and one more is 80

Question 9

Which is the largest number?
37, 73, 13, 17

73 has 7 tens and 3 ones

Question 10

Put these numbers in order from lowest to highest:
23, 33, 32, 12, 13

32, 33, 23, 12, 13

33, 32, 23, 13, 12

32, 33, 13, 23, 12

12, 13, 23, 32, 33

The lowest number is 12 and the highest is 33

You can find more about this topic by visiting BBC Bitesize - Comparing numbers to 100

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

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