1. The addition and minus
2. The meaning of multiply and using X symbol.
3. The multiply one point and multiply not over two points.
4. The meaning of divide and using + symbol.
5. The divide and one point divisor.
6. Addition, minus, multiply and mixed divide.
7. The question of addition, minus, multiply, divide.
8. The question of addition, minus, multiply, and mixed divide.
9. Create question of addition, minus, multiply, divide.