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___
2___1
5___3
121___
141___
___135
2012___
13___5
10___1
72___
___614
14___5
15___9
___153
___910
4___3
___21
145___
___115
106___
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