The area of each face of the cube in the figure is b2 cm2.
  1. Find the volume of the cube in terms of b.
  2. If b2 = 36, find the volume of the cube.
2 m
Jimmy and Kenny had $180 in all. Ken had $(12b + 6) more than Jim. How much did Jim have if b = 7?
2 m
PSLE
Cindy is y years old. Sarah is three times as old as Cindy and Sarah is 5 years older than Jim.
  1. What is Jim's age in terms of y in years?
  2. If Cindy is 13 years old, how many years older is Jim than Cindy in years?
2 m
PSLE
Use the table given to answer questions (a) and (b).
  1. What was the total number of muffins sold last week?
  2. Express your answer in terms of w in the simplest form. If w = 20, how many more muffins were sold on Sunday than on Saturday?
2 m
James bought 4k crates of oranges. Each crate has 20 oranges. He gave away 55 oranges to his neighbour.
  1. How many oranges had he left?
  2. If he sold the rest at 40¢ each and k = 8, how much money did he receive from the oranges sold? Give your answer in dollars.
2 m
Tom has a mass of 8r kg. John is 4 kg heavier than Tom. The mass of May is twice the total mass of the Tom and John.
  1. Find the total mass of the 3 children in terms of r.
  2. If r = 2, find the average mass of the 3 children.
2 m
Find the value of 5a - 9b2 + 3c when a = 10, b = 2 and c = 12.
2 m
PSLE
Andy had 1.4 m of wire. He used some of it to make the figure as shown.
  1. How much of the wire did Andy use to make the figure? Leave your answer in the simplest form in terms of x.
  2. If x = 15, how much of the wire was not used to make the figure? Leave your answer in metres.
2 m
Gary weighs x kg while Jim weighs 2y kg.
  1. Find the average mass of each boy in terms of x and y.
  2. If x = 47 and y = 19, find the average mass of each boy.
2 m
PSLE
Abel, Ben and Cindy share $15z. Abel gets $z more than Ben and Cindy gets $2z more than Ben. If z = 7, how much money does Ben get?
2 m