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.

4___1
7___1
10___2
20___6
21___
85___
18___17
87___
___515
___218
41___
135___
4___3
11___10
2___1
21___
2014___
15___12
31___
134___
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