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39 questions
9+2=
10
11
12
9
9+1=
9
11
10
19
9+0=
9
0
10
1
5 -1 =
4
5
1
2
8 - 1 =
6
7
8
1
4 - 2 =
4
3
2
1
1 less than 9
10
9
8
7
1 more than 7
17
8
7
6
7 - 2 =
2
7
6
5
6 - 1 =
1
6
5
7
3 - 2 =
3
2
1
5
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