1. What is 7x?

2. What is 3a + 4b?

3. What is 5m - 7?

4. What is - 4?

5. What is 9 - 4x?

6. Simplify 4mn

^{2}– 2mn^{2}+ mn^{2}7. Multiply 3a x 8b

8. Multiply in horizontal arrangement 7 x (p + q)

9. Multiply (In vertical and horizontal arrangement 6 x (y - 3 )

10. Multiply (In horizontal and vertical arrangement (y + 4) x (y + 1)