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.

51___
51___
12___4
___81
20___6
8___6
___211
1510___
2010___
9___4
___16
1817___
18___9
14___10
21___
13___2
19___15
1710___
51___
2___1
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