32 questions
11-2=
9
8
7
6
11-3=
9
8
7
6
11-4=
9
8
7
6
11-5=
9
8
7
6
12-5=
9
8
7
6
12-6=
9
8
7
6
12-4=
9
8
7
6
12-3=
9
8
7
6
12-7=
5
4
3
2
12-8=
5
4
3
2
12-9=
5
4
3
2
13-9=
5
4
3
2
13-8=
5
4
6
7
13-7=
5
4
6
7
13-6=
5
4
6
7
13-5=
9
8
6
7
13-4=
9
8
6
7
14-5=
9
8
6
7
14-6=
9
8
6
7
14-7=
9
8
6
7
14-8=
4
5
6
7
14-9=
4
5
6
7
15-9=
4
5
6
7
15-8=
8
9
6
7
15-7=
8
9
6
7
15-6=
8
9
6
7
16-7=
8
9
6
7
16-8=
8
9
6
7
16-9=
8
9
6
7
17-9=
8
9
6
7
17-8=
8
9
6
7
18-9=
8
9
6
7