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.

___42
___23
___41
___37
2___1
9___3
16___7
15___13
20___6
___31
17___2
6___5
5___2
165___
61___
43___
___211
42___
___213
2013___
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