141 P5.ST.JC.18121206
Level 3
The average cost of some books is $30.
If 3 of the books are now each $15 more and
2 of the books are now each $5 less,
the average cost of the books becomes $32.
How many books are there altogether?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
142 P5.PC.JM.17083109
Level 1
The table shows the number of participants in a triathlon in 2 recent years. What percentage of the participants this year are boys?
2 m
Finding percent Percent of a set Table
143 P5.ST.JC.18121207
Level 3
The average cost of some books is $10.
After 2 new books are added,
it adds another $60 to the total cost.
As a result, the average cost of all the books increases to $20.
How many books are there at first?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
144 P6.DA.JC.22032403
Level 1 PSLE
The table shows the temperatures of cities A, B, C and D.
  1. When Jane was at some of these cities, the temperature was 15°C. Name the cities. Give your answer in letters. (Eg A, B)
  2. Name the city with the smallest difference in temperatures. Find this difference. Give your answer in this format. (Eg B, 7°C)
2 m
Table Min-max More than or less than
145 P5.PC.JM.17083123
Level 1
The table shows the number of each type of books in a class library. What percentage of the books in the class library were Mystery books?
2 m
Finding percent Percent of a set Table
146 P5.ST.JC.18121208
Level 3
The average cost of some books is $30.
After 2 new books are added,
it adds another $10 to the total cost.
As a result, the average cost of all the books decreases to $20.
How many books are there at first?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
147 P6.RA.NK.21060204
Level 1 PSLE
Sandy had 50 stickers and Tina had 22 stickers. After Sandy gave some of her stickers to Tina, the number of stickers Sandy and Tina had was in the ratio 1 : 2. How many stickers did Tina have in the end?
2 m
Ratio to units Internal transfer Unchanged total Units table
148 P6.DA.NK.21060913
Level 2 PSLE
The table shows the number of pupils with the following scores. A higher score means a better performance. Prizes were given to the top 8 pupils. Aaron won a prize. What was the lowest he could have scored?
2 m
Table Min-max
149 P5.PC.JM.17083114
Level 2
The table shows the survey results of the favourite fruits for some pupils. What is the percentage of pupils who chose the two most popular fruits?
2 m
Finding percent Percent of a set Table
150 P6.RA.JC.17050711
Level 2
The ratio of Wendy's stamps to Yoko's stamps at first was 3 : 4. After Wendy gave Yoko 24 stamps, the ratio of Wendy's stamps to Yoko's stamps is 1 : 2. What was the total number of stamps they had altogether?
2 m
Ratio to units Internal transfer Unchanged total Units table
151 P6.DA.NK.21060914
Level 2 PSLE
Participants of a quiz must obtain at least a certain score in the first round to qualify for the next round. There were 150 participants in the first round and the table shows the number of participants for each score. 50% of the participants did not qualify for the next round. From the table, what was the lowest score of a participant who qualified for the next round?
2 m
Table Percent of a set Min-max
152 P6.RA.TL.16010103
Level 2
The ratio of Tim's money to Carl's money is 3 : 5. If Carl has $845, how much must he give to Tim so both will have the equal amount of money?
2 m
Ratio to units Money Equal stage after Internal transfer Unchanged total Units table
153 P6.RA.TL.16010140
Level 2
Carl bought some mangosteens and soursops in the ratio of 1 : 4 . After buying another 24 fruits each, the ratio becomes 5 : 12. Find the number of mangosteens and soursops he has now.
2 m
Ratio to units Unchanged difference Units table
154 P6.RA.TL.16010111
Level 2
Mark and Nick shared some beads in the ratio of 4 : 7. After both each gave away 47 beads to their younger brother, the ratio of the number of beads Mark had to the total number of beads left was 1 : 3. How many beads did the two boys have at first?
2 m
Ratio to units Unchanged difference Units table
155 P6.ST.JC.18121453
Level 3
Fill in the blanks in numbers, units or unit equations.
Adam and Bryan have some stickers.
When Adam gives 15 to Bryan,
the number of stickers he has left is 3 times as many as that of Bryan's.
Let the number of stickers that Bryan has in the end be 1 u.

  1. Number of stickers that Adam has in the end = _____
  2. Number of stickers that Adam has at first = _____
  3. Number of stickers that Bryan has at first = _____
  4. If Adam has 40 stickers more than Bryan at first, find 1 u.
4 m
Times as many Unchanged total Units table Units equations
156 P6.RA.TL.16010115
Level 2
Mr George is 3 times as old as his son, Nick. 6 years ago, the ratio in the age of Mr George and Nick was 7 : 2. Find Nick's current age.
2 m
Ratio to units Times as many Unchanged difference Units table
157 P5.FR.JM.17083003
Level 1
The table shows the number of Primary 1 boys participating in various sports for a school event. Each boy participates in only one sports. 310 of the total number of boys participate in __________. Give your answer in letter. (Eg a)
2 m
Fraction of a set Table
158 P6.PC.JC.18010806
Level 2 PSLE
Sandy, Robert and Matthew shared $450. Robert received 20% more than Sandy while Matthew received 20% less than Sandy. How much more than Matthew did Robert receive?
2 m
Percent to units Money More than or less than Repeated identity Units table
159 P6.ST.JC.18121454
Level 3
Fill in the blanks in numbers, units or unit equations.
Adam and Bryan share a sum of money in the ratio 5 : 7.
After Adam gives 23 of his money to Bryan,
Bryan has $52 more than Adam.

  1. Difference in the amount between Adam and Bryan at first = _____ u
  2. Amount that Bryan has in the end = _____ u
  3. Total amount that they have in the end = _____ u
  4. 1 u = $_____
4 m
Fraction to units Ratio to units Internal transfer Units table Units manipulation
160 P6.RA.JC.17050710
Level 2
Sofie and Thora shared a sum of money in the ratio 2 : 5. After Sofie spent $45, the ratio became 1 : 3. How much money did Thora have?
2 m
Ratio to units Unchanged quantity Units table

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