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.

18___7
19___13
21___
15___2
___215
108___
___54
5___1
6___1
1816___
1911___
4___2
61___
7___1
21___
___19
2014___
1711___
18___14
21___
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