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.

21___
43___
___63
21___
2___1
19___5
1310___
1512___
18___8
___110
205___
___810
5___2
15___3
___131
20___7
11___4
107___
20___2
71___
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