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.

1211___
2___1
20___18
11___4
20___4
10___7
135___
42___
___14
20___15
2010___
___107
5___3
1210___
31___
65___
1915___
171___
4___3
172___
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