Number Bonds Worksheet

Fill in the missing numbers to complete each number bond. The two parts at the bottom add up to the whole number at the top.

13___9
14___12
16___12
21___
31___
___11
7___3
___12
17___6
1917___
___164
3___1
___42
3___1
18___15
6___1
43___
5___3
20___5
10___2
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