256 P6.DA.NK.21060922
Level 3 PSLE
At first, 18 of a tank was filled with water. A tap was turned on for 30 min for more water to flow into the tank. It was then turned off. The line graph shows the volume of water in the tank over the 30 min.
  1. How many litres of water flowed into the tank in one minute?
  2. At the end of 30 min, what fraction of the tank was filled with water?
  3. The tap was turned on again to fill up the tank at the same rate as before. How many more minutes did it take for the tank to be filled completely?
5 m
Line graph Volume Duration Rate 1 object Fraction of a whole
257 P6.SP.TL.18012283
Level 3
Singapore and Kuala Lumpur is 375 km apart. Rael left Singapore for Kuala Lumpur at 10.00 a.m. travelling at an average speed of 75 km/h. Sam left Singapore later than Rael and caught up with him at 12.00 p.m. Sam was travelling at a speed of 90 km/h.
  1. At what time did Sam leave Singapore?
  2. How much later did Rael arrive in Kuala Lumpur than Sam?
4 m
DST triangle Different speed Same starting point Different starting time Overtaking Distance apart Duration Start end time Timeline
258 P6.SP.TL.18012284
Level 3
At 8 a.m., Rina started from City A and travelled towards City B and his speed remained constant throughout. At 9 a.m., Mandy started her journey from City A towards City B at an average speed of 72 km/h. Mandy overtook Rina at 12 p.m. After overtaking, Mandy carried on her journey at the same average speed and reached at City B at 2:30 p.m.
  1. Find Rina's average speed in km/h.
  2. What is the distance between the two cities?
4 m
DST triangle Average speed Same starting point Different starting time Overtaking Duration Start end time Timeline
259 P6.SP.TL.18012287
Level 3
Timothy took 15 min to jog from his home to his school. After that, he took 20 min to walk the same way home. His walking speed was 3 km/h slower than his jogging speed.
  1. Find Timothy's jogging speed in km/h.
  2. How far was the school from his home?
4 m
DST triangle Average speed Different speed Distance apart Inverse ratio Unit conversion Duration More than or less than
260 P6.SP.TL.18012282
Level 3
Building A and Building B were 360 km apart. A car travelled from Building A towards Building B. At the same time, a bus started from Building B to Building A. After travelling 112 hours, the two vehicles were still 144 km apart. If the ratio of the average speed of the bus to that of the car was 4 : 5, find
  1. the average speed of the bus.
  2. the time taken for them to meet. travelling the rest of the journey
4 m
DST triangle Average speed Different starting point Same starting time Distance apart Direct ratio Common time Duration Units method

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