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.

15___13
64___
17___11
21___
105___
___21
___144
___26
141___
1810___
17___15
42___
12___7
159___
166___
___511
14___1
6___1
10___9
___117
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