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