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.

15___8
121___
4___1
19___6
___11
21___
___78
___63
83___
6___3
12___3
___112
1715___
___13
13___4
___510
1916___
___116
31___
2___1
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