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.

1514___
___107
139___
___610
___121
___31
13___12
13___1
16___13
1613___
___72
1816___
___55
19___9
12___5
17___2
21___
106___
18___11
18___11
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