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
Sara had 100 sweets. She gave some sweets to k pupils and had 12 sweets left. How many sweets did each pupil get?
2 m
A rope w cm long is cut into two pieces. One piece is 5 cm longer than the other. What is the length of the longer piece? Give your answer in terms of w.
2 m
PSLE
Find the value of 7 + 2a3 when a = 8. Give your answer as a mixed number in the simplest form.
2 m
PSLE
Find the value of 2w - 6 + 3w5 when w = 8. Give your answer as a mixed number in the simplest form.
2 m