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.

13___3
___78
10___6
21___
51___
15___6
41___
4___1
7___5
81___
19___13
93___
1110___
13___4
5___4
___142
157___
1512___
18___3
21___
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