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.

1210___
61___
14___12
20___13
4___2
4___2
___42
21___
___19
19___15
73___
___55
2___1
___99
61___
21___
1513___
12___2
20___19
128___
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