1. Express 36 as a product of its prime factors
2. The HCF of 30ab and 42a is
3. An 800g of rock was analysed and found to contain 48g of gold. What percentge of the rock is gold.
4. Remove the bracket and simplifyy (a-3b) + (8b-5a)
5. Find the value of y in 4(y+3) = 6(y-1)
6. Simplify 4½ ÷ (12 ½ of 18/25)
7. Express 2h 30mins as a fraction of 4h 10mins
8. One of the following is not equivalent to 3/7
9. What is the sum of prime numbers between 65 and 75