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.

21___
72___
___22
20___13
54___
16___12
31___
123___
15___8
___46
___312
___66
173___
17___8
42___
6___3
18___1
9___5
15___3
4___2
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