___ − 8 = 5 5 + 8 = ___
___ − 5 = 8 8 + 5 = ___
___ − 8 = 8 8 + 8 = ___
11 − 7 = ___ 7 + ___ = 11
11 − ___ = 7 ___ + 7 = 11
12 − ___ = 5 ___ + 5 = 12
12 − 5 = ___ 5 + ___ = 12
___ − 7 = 7 7 + 7 = ___