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
4___1
1712___
43___
11___1
82___
___76
10___5
___115
18___15
20___9
31___
6___4
7___6
51___
___134
71___
11___7
19___17
___1010
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