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___11
20___9
134___
157___
16___8
4___1
11___5
___33
21___
1312___
32___
1610___
81___
51___
61___
2___1
6___5
207___
17___13
21___
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