How quickly should bonds be answered?

Aim for confident, near-instant responses without counting aids.

Can number bonds help with subtraction?

Yes. They accelerate both subtraction and inverse-check strategies.

Learn these pairs first.

0 + 20 = 20

1 + 19 = 20

2 + 18 = 20

3 + 17 = 20

4 + 16 = 20

5 + 15 = 20

6 + 14 = 20

7 + 13 = 20

8 + 12 = 20

9 + 11 = 20

10 + 10 = 20

11 + 9 = 20

12 + 8 = 20

13 + 7 = 20

14 + 6 = 20

15 + 5 = 20

16 + 4 = 20

17 + 3 = 20

18 + 2 = 20

19 + 1 = 20

20 + 0 = 20

Number Bonds to 20 practice for ages 6-7 with focus on bridging strategy support for addition and subtraction.

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10

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