Questions

From Worst to Best

76 P6.SP.TL.18012232

Level 3
Jake walks to school at an average speed of 4 km/h every day. One day, after walking a distance of 1 km, he realised that his watch was slow. So, he ran at a constant speed and managed to reach his school just on time. Later, he calculated that if he had run at this speed right from the start of the journey, he would have reached his school 5 minutes earlier. What was his running speed?

3 m

Video Attempt

77 P6.AG.JC.17080440

Level 3
Some oil is leaking from a crack of a container. After z minutes, the volume of the oil left in the container is given as Volume = 40(100 - 5z) cm³. How much oil will be left in the tank after 10 minutes? Give your answer in litres.

3 m

Video Attempt

Algebra in 1 variable Algebra substitution Volume Unit conversion

78 P6.VO.NK.17080919

Level 3
A tank, 110 cm by 100 cm by 70 cm, was completely filled with water. It was used to fill 16 bottles, each 3 litres in capacity. What was the height of the water left in the tank after all the bottles were filled. Round off to whole number.

3 m

Attempt

Volume of cuboid Height of cuboid Volume transfer W Round off Unit conversion

79 P6.VO.NK.17080921

Level 3
³₄ of a rectangular tank, 90 cm by 8 cm by 5 cm, is filled with water. A cubical container of edge 18 cm is filled with water to a depth of 15 cm. If the water in the rectangular tank is transferred to the cubical container until it is filled to its brim, how many litres of water will be left in the rectangular tank?

3 m

Attempt

Volume of cuboid Volume of cube Volume transfer Fraction of a whole Unit conversion

80 P6.FR.JC.22050804

Level 3 PSLE
The figure shows two stacks of identical paper cups. There are 5 cups in the shorter stack and 11 cups in the longer one. The length of the shorter stack is 15 cm and the length of the longer stack is 27 cm. Alle wants to pack the paper cups as a single stack into a box ³₅ m long. What is the most number of cones he can pack into the box?