Subtraction
0-20
0-20
15-8=
7
5
50-35=
15
80-5=
75
100-5
95
20-11=
39-33=
6
42-37=
5
75-15=
60
95-15=
80
10-6=
4
37-26=
11
39-12=
78-12=
66
88-33=
55
17-9=
8
14
55-37=
18
65-47=
18
91-27=
64
13-6=
7
17
60-45=
15
79-39=
40
95-75=
20