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___10
21___
139___
13___5
4___1
1810___
___11
___12
___49
1712___
___24
188___
13___8
___51
121___
3___2
___104
18___3
13___1
___21
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