4 + ____ = 9 5 + 4 = 9 ____ - 5 = 4 9 - ____ = 5 7 + 3 = 10 3 + 7 = ____ 10 - ____ = 3 10 - ____ = 7 3 + 4 = ____ ____ + 3 = 7 7 - 3 = 4 7 - 4 = ____ 5 + 8 = 13 ____ + 5 = 13 ____ - 8 = 5 13 - ____ = 8 8 + 7 = ____ ____ + 8 = 15 15 - ____ = 7 15 - 7 = 8 9 + 3 = ____ 3 + 9 = 12 12 - ____ = 3 12 - ____ = 9

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