Level 2
The figure is made up of cubes of sides 1 cm. How many more 1-cm cubes are needed to form a large cube of side 4 cm?
2 m
Level 2
The tank, measuring 21 cm by 20 cm by 40 cm, is 34 filled with water at first. All the water is poured into empty identical bottles to the brim. Each bottle has a capacity of 700 mℓ.
  1. How much water was there in the tank at first? Give your answer in millilitres.
  2. How many such bottles are completely filled with water?
2 m
Level 3
Study the table carefully.
  1. How many insects are there in Week 7?
  2. How many insects are there in Week 14?
  3. If there are 729 insects, how many weeks have passed?
3 m
Level 3
The total surface area of a cube is 6 m2. What is the volume of the cube?
3 m
Level 3
9 identical 4-cm cubes are placed in an empty rectangular tank of length 90 cm and width 25 cm. The tank is then filled with water from a tap flowing at a rate of 7 litres per minute. It takes 12 minutes to fill up 34 of the tank. What is the height of the tank? Correct the answer to 1 decimal place.
3 m