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___1
___21
19___5
12___8
104___
87___
10___7
___121
___123
133___
11___8
151___
135___
___21
127___
19___1
___99
___161
31___
___63
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