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.

1914___
21___
___51
13___7
12___10
15___4
63___
___210
18___13
163___
15___7
7___2
7___4
42___
17___9
17___10
___36
___121
15___4
8___2
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