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___
14___9
16___15
4___1
52___
11___2
1413___
12___6
144___
42___
21___
21___
1311___
8___6
168___
___21
___53
5___4
___12
18___15
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