50 - _____ = 100
50
100 - _____ = 30
70
13 + _____ = 20
7
90 + _____ = 100
10
4 + 6 =
10
19 + _____ = 20
1
100 - 90 =
10
15 + _____ = 20
5
5 + 5 =
10
100 - 40 =
60
60 + ______ = 100
40
1 + _____ = 10
9
17 + ___ = 20
3
_____ + 17 = 20
3
____ + 8 = 10
2
7 + ____ = 10
3
100 - ____ = 70
30
100 - 80 =
20
_____ + 2 = 10
8
80 + ______= 100
20
12 + ____ = 20
8
60 + 40 =
100
50 + 50 =
100