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___
20___13
51___
___21
116___
12___2
12___9
2___1
1614___
20___1
___21
123___
___512
7___5
8___6
___33
31___
21___
64___
15___12
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