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Let's begin with a practical exercise involving counting in twos.

For more help and advice with Maths watch this Teacher Talk video.

Here is number 7 on a number track.

How much is 2 more than 7?

How much is 2 less than 7?

9 is 2 more than 7.

5 is 2 less than 7.

Here is number 16 on a number track.

There are 2 shoes in a pair.

Can you count how many shoes there are below?

Count them in twos:

2, 4, 6, 8, 10, 12, 14.

Top tip

Instead of counting up in twos, you can multiply by 2, which is a more efficient way of doing the same calculation.

Counting in twos gives you the two times table.

So, 7 pairs of shoes is the same as

7 x 2 = 14 shoes

Practise counting up in twos from 0 to 40.

Remember, when counting in twos the last digit is always 0, 2, 4, 6 or 8.