Name:__________________

Fill in the missing addend to make the equation equal on both sides.
1, 2 + 5 = 4 + 2, + 1 = 4 + 2
3, 3 + = 4 + 4 4, + 3 = 1 + 8
5, 2 + 2 = + 3 6, 2 + 5 = 3 +
7, + 6 = 1 + 8 8, 2 + = 4 + 4
9, + 1 = 3 + 6 10, + 5 = 2 + 7
11, 0 + = 3 + 6 12, 2 + 5 = + 7


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