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Subtraction is the taking of one number or amount away from another.
It is the opposite of addition.
Example
Look at this subtraction.
10 - 1 = ?
Answer
Start at 10 and count 1 backwards.
You can use the number line to help you count.
10 - 1 = 9
When using a number line always move to the left when you subtract.
Start on the number 10 and move 1 place to the left. You get to the number 9. So, 10 - 1 = 9
What if you wanted to subtract 2 from a number?
Example
12 - 2 = ?
Answer
Start at 12 and count 2 backwards. So, start at the number 12 on the number line and count back 2 places to the left.
You get to the number 10.
12 - 2 = 10
Are you ready to practise some now and become a maths wizard?
