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___
139___
21___
1312___
15___12
___143
6___1
86___
___14
___102
___123
5___3
9___6
17___12
2010___
117___
21___
13___7
41___
8___3
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