31 P6.ST.JC.18121427
Level 3
Fill in the blanks in whole numbers or decimals only.
The ratio of adults to children is 1 : 2.
The ratio of boys to girls is 3 : 5.
The number of women to men is 2 : 3.
Let the number of children be 2 u.

  1. Number of adults = _____ u
  2. Number of boys = _____ u
  3. Number of women = _____ u
  4. Difference between the number of boys and women = _____ u
4 m
F Multiplication Combined repeated identity Decimal units Units table
32 P5.RD.JM.17083132
Level 2
A bag contains blue and green marbles in the ratio of 2 : 5. There is a total of 91 marbles in the bag. How many more blue marbles must be added into the bag so that the number of blue marbles will be the same as the number of green marbles?
2 m
Ratio to units More than or less than Equal stage after Units table Unchanged quantity
33 P6.RD.TL.16010153
Level 2
Natalie has 3 times as many buttons as Xuan. Xuan has 23 as many buttons as Fiona. If the three of them have a total of 110 buttons, how many buttons does Natalie have?
2 m
Fraction to units Times as many Repeated identity Units table
34 P4.ST.JC.18120940
Level 3
Adam has 200 red and blue stickers.
He sells 40 red stickers and the number of blue stickers becomes 3 times as many as red stickers.
  1. How many more blue stickers than red stickers does Adam have at first?
  2. How many less red stickers than blue stickers does Adam have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
35 P4.ST.JC.18120941
Level 3
Adam has 200 red and blue stickers.
He buys 40 red stickers and the number of red stickers becomes 3 times as many as blue stickers.
  1. How many more red stickers than blue stickers does Adam have at first?
  2. How many less blue stickers than red stickers does Adam have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
36 P6.RD.JO.21042212
Level 2 PSLE
Mary has a number of pens in three colours: yellow, orange and purple. 310 of the pens are yellow. The number of yellow pens is twice the number of orange pens. What fraction of the pens is purple?
2 m
Fraction of a set Fraction to units Times as many Repeated identity Units table
37 P6.RA.JC.16010101
Level 2
The ratio of Henry's age to Mark's age is 9 : 5. Last year, their average age was 20. How old will Mark be in 5 years' time?
2 m
Ratio to units Average Units table
38 P4.ST.JC.18120942
Level 3
Adam has 2 times as many red stickers as blue stickers.
He gives away 30 blue stickers.
Adam has 3 times as many red stickers as blue stickers.
  1. How many more red stickers than blue stickers does Adam have at first?
  2. How many less blue stickers than red stickers does Adam have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
39 P6.RD.JO.21042226
Level 2 PSLE
At a shop, the price of the blouse is 35 the price of the vest. The price of the dress is half the price of the blouse. What is the ratio of the price of the vest to the price of a dress to the price of the blouse?
2 m
Fraction to units Finding ratio Repeated identity Units table
40 P4.ST.JC.18120943
Level 3
Adam has 3 times as many red stickers as blue stickers.
He buys another 30 blue stickers.
Adam has equal number of red and blue stickers.
  1. How many more red stickers than blue stickers does Adam have at first?
  2. How many blue stickers and red stickers does Adam have in the end?
4 m
Times as many Equal stage after Unchanged quantity Model Comparison Units table

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