21 P6.RD.NK.21060207
Level 3 PSLE
At first, the ratio of the number of boys to the number of girls in a club was 4 : 1. After 10 boys and 10 girls joined the club, the ratio became 3 : 1.
  1. Did the percentage of members who were girls increase (1), decrease (2) or remain the same (3)? Give your answer in number. (Eg Increase = 1)
  2. In the end, how many boys were there in the club?
3 m
Ratio to units Percent change to Unchanged difference Units table
22 P6.RD.TL.16010110
Level 3
The ratio of Henry's total points to that of Vincent's in a mock test was 6 : 7. In the next mock test, Henry's points increased by 70%. By what percentage must Vincent's points be increased if their total points were to be the same? Round off the answer to the nearest whole number.
3 m
W Round off Ratio to units Finding percent Percent change by Percent to units Equal stage after All change Units table Units manipulation
23 P6.RD.NK.21060209
Level 3 PSLE
On Saturday, the number of adults to boys to girls visiting a zoo was 3 : 6 : 5. On Sunday, the number of adults visiting the zoo remained the same. However, the number of boys increased by 50% and the number of girls decreased by 20%.
  1. What was the ratio of the number of adults to boys to girls visiting the zoo on Sunday?
  2. On Saturday, 572 boys and girls visited the zoo. What was the total number of visitors at the zoo on Sunday?
3 m
Finding ratio Ratio to units Percent change by All change Units table
24 P6.PC.JC.19082903
Level 3
Timmy spent $180 and saved the rest of his money. If he increased his spending by 15%, his savings would decrease by 27%. How much money did Tom have?
3 m
Percent change by Percent of different bases Units method
25 P6.PC.TL.16010103
Level 3
Some adult passengers are on a coach. If 25 tourists alight from the coach, the percentage of locals will increase from 15% to 40%. How many passengers are there in the coach?
3 m
Percent change to Percent to units Percent of different bases Unchanged quantity Units table
26 P6.PC.TL.16010102
Level 3
In a box, there are some mangosteens and lemons. If 80 more lemons are put into the box, the percentage of mangosteens will decrease from 70% to 30%. How many mangosteens are there in the box?
3 m
Percent change to Percent to units Percent of different bases Unchanged quantity Units table
27 P6.PC.TL.16010101
Level 3
A store owner had 505 kg of fresh honeydews. The honeydews contained 60% water when fresh. One week later, there was only 50% water left in the honeydews. What was the mass of the honeydews one week later?
3 m
Percent change to Percent to units Percent of different bases Mass Unchanged quantity Units table
28 P6.DA.NK.21060909
Level 2 PSLE
The bar graph shows the number of storybooks read by a class from January to April. The number of storybooks read is not shown on the scale.
  1. What was the percentage increase in the number of storybooks read from January to February?
  2. The average number of books read in a month from January to April was 25. How many books did the class read in April?
3 m
Bar graph Percent change by Average Units method
29 P6.PC.TL.16010105
Level 3
Ethan and Ian share a sum of money. Ethan receives $2400. If Ethan gets $105 less, the amount of money Ian gets will increase by 35%. Find the sum of money that the boys share.
3 m
Percent change by Percent to units Money Internal transfer Unchanged total Units table
30 P6.DA.NK.21060920
Level 2 PSLE
The graph shows the number of muffins sold each month by a new bakery from July to December.
  1. How many more muffins were sold in October than in August?
  2. What was the percentage increase in the number of muffins sold in November compared to July?
3 m
Line graph Percent change by More than or less than
31 P6.PC.TL.16010106
Level 3
Kate and Yvonne collected stamps. Kate gave 30% of her stamps to Yvonne and as a result, Yvonne's stamps increased by 70%. If Kate had 294 stamps left, find the total number of stamps the two girls had at first.
3 m
Percent change by Percent to units Percent of different bases Internal transfer Units table Units manipulation
32 P6.DA.JC.23030803
Level 2
The graph shows the amount of money Ron saved from his pocket money every month from January to May.
  1. How much money did Ron save altogether from January to May?
  2. What was the average amount of money Ron saved from January to May?
  3. Ron saved $80 in June. The amount saved increased by 100% from June to July and another 100% from July to August. How much money did Ron save in August?
3 m
Line graph Average Percent change by
33 P6.PC.TL.16010148
Level 3
The petrol tank of Fred's convertible was 80% empty. He went to the petrol kiosk and topped up 25ℓ of petrol. When he reached the theme park, the petrol tank was 90% full. Given that he used 4ℓ of fuel to get to the theme park from the kiosk, find the capacity of the petrol tank.
3 m
Percent of a whole Percent change to Percent to units Percent of different bases Volume Unchanged total Units table Units manipulation
34 P6.DA.TL.18011917
Level 3
The line graph shows the number of dresses sold by a shop from July to December in 2013.
  1. What was the average number of dresses sold per month from July to December in 2013?
  2. The total number of dresses sold for the same period from July to December in 2012 was 672. Find the percentage decrease in the total number of dresses sold for the same period from 2012 to 2013.
3 m
Line graph Average Time Percent change by
35 P6.PC.JC.18010809
Level 3 PSLE
At first, Leah had a total of 66 blue and purple balloons. 17 purple balloons burst. She then increased the number of blue balloons by 75%. After that, Leah had a total of 79 balloons. How many purple balloons did she have at first?
3 m
Percent change by Percent to units All change Units table
36 P6.RD.JC.19082902
Level 3
Fabian, Gilbert and Henry had some marbles in the ratio of 2 : 3 : 5. Henry gave 40% of his marbles to Fabian and Gilbert. As a result, Fabian had the same number of marbles as Gilbert and Henry had 36 fewer marbles than Fabian.
  1. What was the percentage increase in Fabian's marbles after receiving from Henry?
  2. How many marbles did Gilbert have at first?
4 m
Ratio to units Percent of a set Percent change by More than or less than Equal stage after Internal transfer Units table Decimal units
37 P6.RD.JC.19082904
Level 3
Andy, Bob and Charles collected game cards in the ratio of 7 : 4 : 9. After Charles gave 310 to Andy and Bob, Charles had 60 less game cards than Andy. The number of game cards that Ben had increased by 35%. How many game cards did Andy and Charles have?
4 m
Fraction of a set Ratio to units Percent to units Percent change by More than or less than Internal transfer Units table Decimal units
38 P6.PC.JC.23100214
Level 2 PSLE
Carl had a collection of rulers, pens and markers. He had 85 rulers. 30% of his collection was pens. He had 51 fewer pens than markers.
  1. How many pens did Carl have?
  2. Carl gave away some pens. His total collection decreased by 20%. What percentage of his collection was pens after that?
4 m
Percent of a set Percent change by More than or less than Units method
39 P6.PC.TL.16010119
Level 3
One minute ago, 80% of the students in a parade square were girls. 143 more students entered the parade square. As a result, the number of girls increased by 40% and the number of boys increased by 60%. How many students are in the parade square now?
4 m
Percent of a set Percent change by Percent to units Percent of different bases All change Units table
40 P6.PC.TL.16010116
Level 3
Eva's salary is 30% more than Betty's salary. When their salaries are increased by 60%, their combined salaries will be $11040. How much was Eva's salary before the increase?
4 m
Percent change by Percent to units Percent of different bases More than or less than All change Units table Decimal Units

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