2 + ___ = 23
___ + 4 = 24
1 + 1 = ___
15 - ___ = 14
15 - ___ = 7
12 + 10 = ___
___ - 11 = 15
___ + 4 = 30
10 - 5 = ___
___ - 1 = 26
13 + 8 = ___
12 - 6 = ___
4 + 4 = ___
1 + ___ = 22
___ + 5 = 30
___ + 17 = 28
___ - 10 = 6
14 - 1 = ___
15 - ___ = 2
15 - 6 = ___
___ - 1 = 9
15 - ___ = 12
___ - 6 = 9
20 + 6 = ___
___ - 3 = 10
15 - ___ = 7
5 + ___ = 28
15 - ___ = 15
2 + ___ = 30
6 + ___ = 26
15 - ___ = 8
21 + 7 = ___
4 + 3 = ___
18 + 4 = ___
3 + 4 = ___
8 + 10 = ___
___ - 8 = 22
15 - 11 = ___
___ - 1 = 3
13 + 14 = ___
15 - 6 = ___
15 - 4 = ___
12 - 7 = ___
12 - 3 = ___
___ - 2 = 6