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
4___1
6___1
103___
7___4
17___16
___143
8___3
16___6
12___3
1512___
1913___
81___
16___7
___18
5___1
31___
52___
10___1
17___11
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