Level 3 PSLE
An open rectangular box is shown.
  1. The inside of the box including the base is painted. Find the painted area.
  2. When the box is packed full with 1-cm cubes, how many cubes are there?
  3. How many cubes touch inside the box as a result?
5 m
Level 3 PSLE
The figure shows the amount of water in two rectangular Tanks, A and B, at first.
Ray poured 14 of the water from A into B to fill it to the top, without overflowing.
  1. How much water was there in A at first?
  2. Ray then poured all the water from B into A. 720 cm3 of water overflowed from A. What was the height of A?
5 m
Level 3
The figure is not drawn to scale. It shows an empty container made up of a cuboid, measuring 40 cm by 25 cm by 25 cm and 2 similar cubes of sides 5 cm. Line A is 10 cm. 12.5 ℓ of water is poured into the top cube into the cuboid.
  1. What is the height of the water level from the base of the container?
  2. How much more water in cm3 must be poured in so that the water fills up half of the top cube?
5 m
Level 3 PSLE
There was a total of 22 000 cm3 of water in rectangular tanks A and B at first. The height of the water level in tank B was 6 cm above that of tank A.
  1. Find the height of the water level in tank X.
  2. Ann poured 4200 cm3 of water out of tank Y. Tank Y was then half filled with water. What was the height of tank Y?
5 m
Level 3
The figure, not drawn to scale, shows an empty tank measuring 20 cm by 15 cm by 15 cm. Water flows from Tap A at a rate of 300 mℓ per minute and from Tap B at a rate of 180 mℓ per minute. Tower X and Tower Y have a base area of 20 cm2 and 30 cm2 respectively. Water is drained out of the container at a rate of 130 mℓ per minute. Find the height of the water level after 13 minutes.
5 m