How to subtract from 10 in your head
Taking away from 10 is number bonds to 10 used backwards. If your child knows 3 and 7 make 10, they already know 10 take away 3.
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How it works
- Think of the number bond to 10.
- 10 take away one number leaves its partner.
Worked example
10 − 3: 3 and 7 make 10, so 10 − 3 = 7.
Top tip
If this feels hard, spend a few days on number bonds to 10 first. It makes this trick automatic.
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