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.

51___
3___1
18___1
___511
11___10
___131
21___
___12
___49
___52
181___
32___
14___3
31___
53___
87___
81___
20___16
151___
___413
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