7 + __ = 20
13
12 + __ = 20
8
20 - __ = 5
15
20 - __ = 12
8
10 + __ = 20
10
20 - 7 = __
13
__ + 1 = 20
19
20 - 10 = __
10
__ + 18 = 20
2
20 - __ = 20
0
9 + __ = 20
11
14 + __ = 20
6
__ + 12 = 20
8
16 + __ = 20
4
20 - 18 = __
2
20 - __ = 7
13
3 + __ = 20
17
20 + __ = 20
0
__ + 14 = 20
6
__ + 5 = 20
15
20 - __ = 15
5
1 + __ = 20
19
20 - 9 = __
11
20 - __ = 9
11
20 - __ = 18
2
20 - 4 = __
16
__ + 20 = 20
0
5 + __ = 20
15
17 + __ = 20
3
10 + __ = 20
10
11 + __ = 20
9
20 - 1 = __
19
20 - __ = 3
17
20 - 3 = __
17
__ + 7 = 20
13
20 - 16 = __
4
20 - __ = 14
6
18 + __ = 20
2
20 - 12 = __
8
4 + __ = 20
16
20 - 14 =
6
20 - 10 = __
10
20 - 20 =
0
20 - __ = 1
19