Checking and securing understanding of changing the subject

12 questions

1. If the side of an equilateral triangle is 3n+1, write an expression for the perimeter.
2. If the side of a regular pentagon is 14y - a write an expression for the perimeter.
3. Which of the following is an expression for the area of a square with side length 3x
4. What is the value of x for 5(x + 7) = 30?
5. If x is a positive integer, what is the value of x for x^2 - 4 = 0?
6. What is the value of x for 2x - 3 = 7?
7. Make x the subject of 3y - x = 15
8. Make y the subject of 4x + 2y = 8
9. Make z the subject of \frac{z}{2} + 3x = 7
10. Make a the subject of b = 3(a - 4) + 2
11. Make m the subject of \frac{4m + 5}{3} = n
12. Make p the subject of 2p + \frac{q}{3} = 4

License: OGL