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.

2___1
___21
12___6
171___
11___5
9___2
___51
138___
137___
20___15
31___
___125
3___2
65___
2___1
106___
42___
14___10
73___
___52
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