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
3___1
21___
20___7
___153
163___
10___4
109___
20___9
2___1
___12
___12
5___4
17___6
32___
___54
19___3
1910___
15___1
31___
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