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10 questions
9 + 7 =
15
16
17
16 - 7 =
8
9
10
9 + 9 = 18. So; 9 + 10 =
18
19
20
....... + 10 = 17
5
6
7
16 - ........ = 9
7
8
9
8 + 8 =
14
15
16
4 + 4 =
7
8
9
8 + 7 =
14
15
16
16 - 8 =
8
9
10
...... + 12 = 17
5
7
10