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___12
___173
1513___
11___2
21___
65___
___315
134___
53___
53___
20___14
21___
172___
19___10
64___
2018___
1210___
19___2
___61
___13
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