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.

6___3
10___8
1511___
21___
1815___
___64
3___1
___43
1918___
158___
5___4
___21
64___
___121
10___4
105___
87___
___21
21___
19___9
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