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.

12___3
___510
151___
___215
18___11
21___
91___
13___1
21___
17___2
17___5
85___
65___
43___
18___8
___65
17___11
1210___
___21
21___
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