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.

21___
9___4
3___1
17___2
19___3
2011___
64___
12___3
___145
53___
___121
10___7
31___
31___
14___2
8___7
123___
109___
6___2
128___
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