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___13
15___12
21___
___115
121___
2___1
82___
122___
2013___
163___
18___3
20___19
7___2
1814___
21___
2___1
148___
43___
103___
71___
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