56 P6.RA.NK.21060203
Level 1 PSLE
The ratio of the number of vests to that of skirts in a shopping centre was 3 : 2 at first. After 30 skirts were sold, the ratio of the number of vests to that of skirts became 4 : 1. What was the total number of vests and skirts in the shopping centre at first?
2 m
Ratio to units Unchanged quantity Units table
57 P6.RA.JC.23030110
Level 3
The number of boys and girls in a hall were in the ratio 2 : 7. After 15 boys entered the hall and half the number of girls left the hall, the ratio of the number of boys to girls became 1 : 1. How many children were there in the hall at first?
2 m
Ratio to units Equal stage after All change Decimal units Units table
58 P6.ST.JC.18121459
Level 2
Fill in the blanks.
The ratio of the number of boys to the number of girls in Class A is 3 : 2.
The ratio of the number of boys to the number of girls in Class B is 4 : 5.
The number of boys is the same.

  1. Number of boys in Class A = _____ u
  2. Number of girls in Class B = _____ u
  3. Number of children in Class B = _____ u
  4. Total number of children = _____ u
4 m
Ratio to units Equal stage Units table Units manipulation
59 P5.RA..JC.17122901
Level 2
Amin has a number of $2 and $5 notes in the ratio of 7: 4. The total value of all the notes is $306. How many $5 notes does Amin have?
2 m
Ratio to units Money Number x value Units table
60 P6.ST.JC.18121460
Level 2
Fill in the blanks.
The ratio of the number of boys to the number of girls in Class A is 3 : 2.
The ratio of the number of boys to the number of girls in Class B is 4 : 5.
The number of boys is the same.

  1. Difference in the number of children in Class A and Class B = _____ u
  2. Difference in the number of girls in Class A and Class B = _____ u
  3. Total number of boys = _____ u
  4. Total number of girls = _____ u
4 m
Ratio to units Equal stage Units table Units manipulation

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