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
17 - 12
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.
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Question
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Teacher explanation