- 9 __ 4 = 5
- 4 ○ 6 = 10, what is ○?
- 6 ○ 3 = 9, what is ○?
- 17 __ 7 = 10
- 40 __ 4 = 10
- 9 ○ 7 = 2, what is ○?
- 8 ○ 7 = 15, what is ○?
- 2 ○ 5 = 7, what is ○?
- 14 ○ 2 = 7, what is ○?
- 32 __ 8 = 4
- 54 __ 9 = 6
- 10 __ 5 = 2
- 15 __ 5 = 3
- 1 ○ 5 = 6, what is ○?
- 42 __ 7 = 6
- 5 __ 8 = 40
- 5 ○ 4 = 1, what is ○?
- 3 ○ 2 = 6, what is ○?
- 3 ○ 5 = 8, what is ○?