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___3
1310___
20___5
___710
2___1
7___2
63___
21___
13___10
7___6
19___1
___315
2___1
4___2
9___6
17___15
21___
15___1
3___1
31___
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