71 P5.DA.JM.17083186
Level 1
In 8 years' time, the average age of Mr Tong and his son will be 27 years. What is their total age now?
2 m
Average
72 P6.SP.TL.18012205
Level 2
A train travelled 900 km from City A to City B at an average speed of 150 km/h. It then travelled 500 km to City C at an average speed of 120 km/h. Find the time taken for the whole journey. Express the answer in h and min.
2 m
DST triangle Average speed Journey by parts Different speed Duration
73 P6.DA.TL.18011912
Level 2 PSLE
The bar graph shows the number of printers sold by Mr. Owen in 4 months. The bar that shows the number of printers sold in December has not been drawn. The number of printers sold in October was 30% of the total number of printers sold in the 4 months.
  1. What was the total number of printers sold in the 4 months?
  2. What was the number of printers sold in December?
2 m
Bar graph Time Percent of a set
74 P6.ME.NK.21060319
Level 1 PSLE
Karla read 3 books in 2 hours. She took the same amount of time to read the first 2 books. She took 30 minutes longer to read the third book than the first. How many minutes did she take to read the third book?
2 m
Time Duration Unit conversion More than or less than Units method
75 P6.SP.TL.18012207
Level 2
An airplane flew 9000 km from Country X to Country Y at a speed of 450 km/h. It then covered 4900 km from Country Y to Country Z at a speed of 350 km/h. Find the time taken for the whole journey.
2 m
DST triangle Average speed Journey by parts Different speed Duration
76 P6.ME.JC.19072704
Level 2 PSLE
3 children rented 2 computers from 4.15 p.m. to 5.00 p.m. and took turns to play games on them. At any time, 2 of them played on the computers while the other child watched. If each of them had the same amount of playing time, how many minutes did each child get?
2 m
Duration Start end time am pm Equal stage Units method
77 P5.ME.JM.17083117
Level 1
The table shows the operating hours of a clinic. How many hours does the clinic operate from Sunday to Thursday altogether? (Give your answer in h.)
2 m
Start end time Duration
78 P6.SP.TL.18012208
Level 2 PSLE
A motorist travelled 23 of his journey at an average speed of 80 km/h and completed the remaining 240 km in 4 h. What was the total time taken for the whole journey?
2 m
Average speed Different speed Duration Fraction of a whole F Division
79 P6.ME.NK.21060320
Level 2 PSLE
Pauline answered 40 questions in a quiz. She took 3 min for each of the first 10 questions and twice as long for each of the remaining questions. The quiz started at 1.45 p.m. At what time did she complete the quiz?
2 m
Time Unit conversion Start end time Duration Timeline Times as many Units method
80 P4.MS.TL.18082280
Level 1
Find the following values without a calculator.
  1. 30 min after 12 30 h = ________
  2. 1 h after 03 00 h = ________
  3. 1 h 15 min after 14 00 h = ________
  4. 2 h 10 min after 16 30 h = ________
2 m
Time Duration

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