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___
___21
9___3
7___4
___39
139___
4___2
32___
13___7
54___
82___
2011___
16___13
20___12
___82
___142
___172
5___2
16___15
11___4
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