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.

20___19
10___4
17___15
53___
135___
13___9
149___
17___15
___45
12___8
15___9
13___7
2___1
122___
185___
2___1
173___
___41
113___
___513
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