Fraction, percentage, algebra

12f + 9 - 6f + 2

Find the value of the expression if m=9

(2m + 6) ÷ 3

The perimeter of a rectangle is 170cm. Its length is 4 times its breadth.

Find the length of the rectangle.

9 5

— x —

4 12

11

3 x —

8

3

2 — × 5

8

12 9

— x —

5 10

Caili had some orange juice. She drank 1/5 of it and Aini, Bala and David shared the remainder equally. What fraction of the original amount of orange juice did Aini, Bala and David each get?

Mrs Hakeem buys a box of 48 chocolate truffles. 1/2 of the truffles are made with milk chocolate, and 3/8 of them are made with dark chocolate. The rest are made with white chocolate. How many truffles are not made with white chocolate?

A scout hikes along an 8-km route. He reports at a checkpoint after hiking every 3/4km. How many checkpoints does he report at, including the one at the start and the one at the end?