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Year 2 Calculation - Multiplication and Division By 10
Lots of things come in groups of 10, like the green bottles in the song!

Year 2 Calculation - Multiplication and Division By 10

Learn ×10 and ÷10 with tens. Make equal groups of ten, use bar models, and spot place value patterns to multiply and divide cleanly.

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Fascinating Fact:

Bar model whole and parts: Whole 30, parts are tens. 30 ÷ 10 = 3 parts. So 3 × 10 = 30.

In KS1 Maths, Year 2 pupils learn to multiply and divide by 10 using equal groups, tens frames, and bar models. Counting in tens connects facts like 3 × 10 = 30 and 30 ÷ 10 = 3.

  • Multiple of 10: A number made from tens only, like 10, 20, 30.
  • Bar model: A diagram showing a whole split into equal parts to help you see × and ÷ links.
  • Equal groups: The same number in each group; tens make quick ×10 and ÷10 facts.

Warm up with a quick challenge: try the Multiplication Game before you start the quiz.

How do I multiply by 10 in Year 2?

Count in tens or make ten-sized groups. For example, 4 groups of 10 is 10, 20, 30, 40, so 4 × 10 = 40.

What is an easy way to divide by 10?

Share into groups of ten and count the groups. 30 ÷ 10 means “how many tens in 30?” There are 3 tens, so the answer is 3.

How does a bar model help with ×10 and ÷10?

A bar shows the whole split into equal tens. You can see how many tens make the whole (division) and how many tens you need to build it (multiplication).

Question 1
What is 100 divided by 10?
10
20
100
1000
Dividing by ten means making groups of ten from the number until nothing is left
Question 2
I know that 5 x 10 = 50. What else do I know?
5 ÷ 10 = 50
50 x 10 = 50
50 ÷ 10 = 5
50 ÷ 5 = 500
If 5 groups of 10 makes 50, then 50 divided into groups of 10 will give 5 in each group
Question 3
Which is not true?
9 x 10 = 90
10 x 5 = 50
10 x 14 = 140
10 x 7 = 107
10 x 7 = 70
Question 4
Is 83 a multiple of 10?
Yes, because it has 8 tens
Yes, because it's bigger than 10
No, multiples of ten end with a '0'
No, it's not big enough
Multiples of ten have a '0' as a last digit
Question 5
Which is the odd fact out?
11 x 10 = 110
110 ÷ 11 = 10
11 x 11 = 111
110 ÷ 10 = 11
11 x 11 = 121 not 111!
Question 6
If one child has 10 toes, how may toes will 4 children have?
40
14
44
400
10 x 4 = 40
Question 7
What are the next two numbers in this sequence: 30, 40, 50, ?
51, 61
55, 60
51, 52
60, 70
The numbers are going up in steps of 10
Question 8
I put 60 children into groups of 10. How many groups do I make?
10, because 60 ÷ 10 = 10
16, because 60 x 10 = 16
60, because 60 ÷ 1 = 60
6, because 60 ÷ 10 = 6
We also know that 6 x 10 = 60 and 10 x 6 = 60
Question 9
How many tens are there in 170?
100
7
17
71
Counting up in tens until you reach 170 is useful here
Question 10
What is 8 x 10?
18
80
88
108
Multiplying by 10 makes the number 10 times larger
You can find more about this topic by visiting BBC Bitesize - Multiplying and dividing

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

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