Subtraction: how many are left?

Take away a quantity and check by adding it back.

Understand the idea

Subtraction finds what remains or the difference between two quantities. Start with the whole amount and remove the stated part.

See a worked example

12 − 4 = 8. Check: 8 + 4 = 12.

A useful check

Keep the original amount and the amount taken away in the right order.

Try a fresh practice set

Five questions with feedback on every answer. New sets can repeat familiar ideas so you can practise again. This is practice, not a certified assessment.

Number range / challenge

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