2, ___ + 9 = 11, ___ + 8 = 10, 7 + ___ = 9, 6 + ___ = 8, 10 + ____ = 12, ____ + 5 = 7, 3, 10 + ___ = 13, ___ + 9 = 12, 8 + ___ = 11, 7 + ___ = 10, ___ + 6 = 9, 4 + ____ = 7

1a Math - Adding with #2-3

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