In this activity, we are going to practise subtracting numbers up to 20.

Example 1

Take away or subtract:

9 - 3

Answer

Start with the first number, which is 9, and count back 3 more numbers.

9   8   7   6

The answer is  6

Example 2

Take away or subtract:

17 - 12

Answer

Start with the first number, which is 17, and count back 12 more numbers.

17   16   15   14   13   12   11   10   9   8   7   6   5

The answer is  5.

How do you feel about trying some questions now?