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13 questions
9
- 3
-----------
6
3
5
3
8-6=
2
6
8
1
6-2=
4
6
2
8
6 - 3 =
1
5
3
9
4
- 1
-----------
4
1
0
3
5
- 3
------------
7 - 4 =
8−2=
6
3
7
4
5−4=
2
9
1
0
7−3=
4
5
10
2
10
- 9
-----------
6
- 3
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