10 + ____ = 15 ____ + 1 = 11 12 = ____ + 2 10 + 3 = ____ ____ + 4 = 14 16 = 6 + ____ 10 + ____ = 17 18 = ____ + 1 9 + 10 = ____ + 9 10 + 10 = ____

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