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.

3___2
4___1
6___5
12___1
43___
17___12
___31
20___12
18___17
20___18
115___
42___
63___
1510___
19___2
___122
___810
16___12
158___
159___
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