1. Which of these is 52 written as a product of its prime factors? a) 2 x 26b) 2 x 2 x 13 c) 4 x 13d) 1 x 52

2. Which of these is 120 written as a product of its prime factors? a) 2 3 x 3 2 x 5b) 2 x 2 x 30 c) 2 3 x 3 x 5 2 d) 2 3 x 3 x 5

3. Which of these is 340 written as a product of its prime factors? a) 2 x 5 2 x 17b) 2 2 x 5 x 17 c) 2 3 x 5 x 34 2 d) 2 3 x 17

4. Which of these is 1500 written as a product of its prime factors? a) 2 3 x 3 2 x 5b) 2 5 x 3 3 x 5 c) 2 2 x 3 x 5 3 d) 2 3 x 3 3 x 5

5. Calculate 2 2 x 3 2 x 5 2

6. Calculate 3 x 5 2 x 7

7. Calculate 2 2 x 5 2 x 13

8. Use prime factorisation to solve the equation 2 m x 5 = 40 m = …..

9. Use prime factorisation to solve the equation 2 a x 3 g = 72 a + g = ….

10. Use prime factorisation to solve the equation 3 d x 5 e = 3375 d + e= ….