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.

1813___
1713___
21___
___13
6___1
2011___
106___
65___
1311___
___14
___73
___72
5___4
20___8
129___
15___12
72___
12___5
18___11
1811___
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