1
8+1=
2
3+4=
3
5+2=
4
2+3=
5
1+5=
6
4+4=
7
4-1=
8
6-3=
9
10-6=
10
9-4=
11
9-7=
12
5-3=
13
10-3=
14
10-1=
15