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.

13___4
14___10
___14
9___4
1615___
___812
1812___
21___
___12
4___2
2013___
___75
86___
___16
133___
143___
8___6
15___3
12___1
21___
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