7 tens, 8 ones
___ + ___ = ___
45
32 ___ 10
9 + 2 = ___
9 + 8 = ___
___ − 9 = 8
9 + ___ = 13
13 − ___ = 9
___ − 5 = 9 5 + 9 = ___
___ − 9 = 5 9 + 5 = ___