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___9
10___5
31___
1911___
42___
64___
21___
2017___
___117
12___9
___215
9___6
18___17
107___
1710___
11___5
98___
1615___
21___
5___4
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