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
___181
109___
6___4
41___
155___
51___
___53
183___
4___2
32___
11___8
17___4
2010___
2___1
15___2
___131
1312___
___910
19___11
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