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Count in 10s | Year 3 Mathematics PDF Download

How to count to 100

Here is a number grid from 1 to 100.
Count in 10s | Year 3 MathematicsLook at the highlighted numbers. What do you notice?
Here are the numbers:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Each number is 10 more than the one before.

Solved Examples

Example 1: Counting Books 
Here is a pile of 10 books.
Count in 10s | Year 3 MathematicsCan you count in tens to find how many books there are in 4 piles?
Count in 10s | Year 3 Mathematics

Let's count them:
10, 20, 30, 40
You can see that there are 40 books in 4 piles of 10.
You can also write this as a repeated addition.
10 + 10 + 10 + 10 = 40

Example 2: A box of pencils holds 10 pencils.
Can you count in tens to work out how many there are in total?

Count in 10s | Year 3 Mathematics

Let's count them:
10, 20, 30, 40, 50, 60, 70
Through repeated addition this is:
10 + 10 + 10 + 10 + 10 + 10 + 10 = 70

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