21 P6.ST.JC.18121420
Level 3
Fill in the blanks.
Number of boys at first is 30% of the children.
Number of boys is then increased to 40%.

  1. Number of boys at first = _____ u
  2. Number of boys in the end = _____ u
  3. Increase in the number of boys = _____ u
  4. Number of children in the end = _____ u
4 m
Percent to units Percent change to Unchanged quantity Units table
22 P6.RA.TL.16010102
Level 2
The ratio of coconuts to mangosteens is 2 : 7. If 348 mangosteens are added, the ratio of coconuts to mangosteens will be 2 : 11. How many more mangosteens than coconuts are there in the end?
2 m
Ratio to units More than or less than Unchanged quantity Units table
23 P6.ST.JC.18121421
Level 3
Fill in the blanks.
Number of boys at first is 40% of the children.
Number of boys is then decreased to 30%.

  1. Number of boys at first = _____ u
  2. Number of boys in the end = _____ u
  3. Decrease in the number of boys = _____ u
  4. Number of children in the end = _____ u
4 m
Percent to units Percent change to Unchanged quantity Units table
24 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
25 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
26 P3.ST.JC.18120897
Level 3
Adam has 6 times as much money as Bryan.
After Adam has spent $60,
he has 3 times as much money as Bryan.
  1. How much money does Bryan have?
  2. How much money does Adam have in the end?
  3. How much money do they have at first?
  4. How much do they have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
27 P3.ST.JC.18120898
Level 3
Adam has 2 times as many stickers as Bryan.
After Adam buys another 60 stickers,
he has thrice as many stickers as Bryan.
  1. How many stickers does Bryan have?
  2. How many stickers does Adam have in the end?
  3. How many stickers do they have at first?
  4. How many stickers do they have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
28 P3.ST.JC.18120899
Level 3
Adam has 3 times as many stickers as Bryan.
After Bryan buys another 60 stickers,
he has 2 times as many as Adam.
  1. How many stickers does Bryan have in the end?
  2. How many stickers does Adam have?
  3. How many stickers do they have at first?
  4. How many stickers do they have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
29 P3.ST.JC.18120900
Level 3
Adam has 2 times as many stickers as Bryan.
After Adam gives away 60 stickers,
Bryan has 3 times as many stickers as Adam.
  1. How many stickers does Bryan have?
  2. How many stickers does Adam have at first?
  3. How many stickers do they have at first?
  4. How many stickers do they have in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
30 P3.ST.JC.18120901
Level 3
Adam has 3 times as many stickers as Bryan.
After Bryan gives away 60 stickers,
Adam has 6 times as many as Bryan.
  1. How many stickers does Bryan have in the end?
  2. How many stickers does Adam have?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
Times as many Unchanged quantity Model Comparison Units table
31 P3.ST.JC.18120902
Level 3
Adam has 3 times as many stickers as Bryan.
After Bryan receives another 60 stickers,
both have equal number of stickers.
  1. How many stickers does Bryan have in the end?
  2. How many stickers does Adam have?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
Times as many Equal stage after Unchanged quantity Model Comparison Units table
32 P3.ST.JC.18120903
Level 3
Adam has 50 stickers more than Bryan.
After Adam gives away 10 stickers,
he has 3 times as many stickers as Bryan.
  1. How many stickers does Bryan have?
  2. How many stickers does Adam have in the end?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
More than or less than Times as many Unchanged quantity Model Comparison Units equations Units table
33 P3.ST.JC.18120904
Level 3
Adam has 50 more stickers than Bryan.
After Bryan gives away 10 stickers,
Adam has 3 times as many stickers as Bryan.
  1. How many stickers does Bryan have at first?
  2. How many stickers does Adam have?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
More than or less than Times as many Unchanged quantity Model Comparison Units equations Units table
34 P3.ST.JC.18120905
Level 3
Adam has 10 stickers more than Bryan.
After Adam gives away 50 stickers,
Bryan has 3 times as many stickers as Adam.
  1. How many stickers does Bryan have?
  2. How many stickers does Adam have at first?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
More than or less than Times as many Unchanged quantity Model Comparison Units equations Units table
35 P3.ST.JC.18120906
Level 3
Adam has 6 times as many stickers as Bryan.
After Adam gives away half of his stickers,
he has 30 stickers more than Bryan.
  1. How many stickers does Bryan have?
  2. How many stickers does Adam have at first?
  3. How many stickers do they have altogether at first?
  4. How many stickers do they have altogether in the end?
4 m
Fraction of a set More than or less than Times as many Unchanged quantity Model Comparison Units table
36 P6.RD.TL.16010107
Level 3
At a stall, the ratio of watermelons to coconuts was 8 : 13. After Kate bought two-thirds of the coconuts, there was a total of 111 watermelons and coconuts left at the stall. How many fruits were there at first?
3 m
Fraction to units Ratio to units Unchanged quantity Units table Units manipulation
37 P6.RD.TL.16010108
Level 3
The amount of Isabelle's salary to Sarah's salary is 2 : 9. If Isabelle spends 35 of her salary, she will have $902 less than Sarah. How much salary does Sarah have?
3 m
Fraction to units Ratio to units Money More than or less than Unchanged quantity Units table Units manipulation
38 P6.FR.JC.22100303
TRY FOR FREE
Level 3 PSLE
At first, a bag contained 9 green beads and some black beads. After some green beads were added, 25 of the beads were black . After 56 red beads were added to the bag and now, 29 of the beads were black. What was the number of green beads added?
2 m
Attempt
Fraction to units Unchanged quantity Units table
39 P6.FR.TL.16010102
Level 2
Vincent had 710 as many stamps as Isabelle. After Vincent bought another 30 stamps, he had 15 less stamps than Isabelle. How many stamps did Vincent have at first?
2 m
Fraction to units More than or less than Unchanged quantity Model & units table
40 P5.ST.JC.18121105
Level 1
Adam has blue and red stickers in the ratio of 5 : 2.
He has 30 more blue stickers than red stickers.
  1. How many stickers does Adam have?
  2. If Adam gives away 10 blue stickers, what is the new ratio of the number of blue stickers to blue stickers?
3 m
Finding ratio R Simplest form Ratio to units More than or less than Unchanged quantity Units method

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