6 P6.ST.JC.18121466
Level 3
Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).

Adam, Bryan and Chris have some stickers.
After Adam's number of stickers is doubled,
Bryan's number of stickers is increased by 10 and
Chris' number of stickers is reduced by 8,
the ratio of the number of stickers of Adam to Bryan to Chris becomes 4 : 2 : 1.

Let the number of stickers that Chris has in the end be 1 u.
  1. Number of stickers that Adam has at first = _____
  2. Number of stickers that Bryan has at first = _____
  3. Number of stickers that Chris has at first = _____
  4. Total number of stickers that they have at first = _____
4 m
Ratio to units All change Working backwards Units table
7 P6.RD.TL.16010125
Level 3
At a fruit stall, there were 399 mangosteens and lemons at first. 34 of the mangosteens and 23 of the lemons were sold. In the end, there were same number of mangosteens and lemons. How many more mangosteens than lemons were sold?
3 m
Fraction to units More than or less than Equal stage after All change Units table Units manipulation
8 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
9 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
10 P6.FR.JC.16010116
Level 2
Last week, Fred had a total of 334 yellow and red pens. Two weeks later, he sold 23 of all the yellow pens and 82 red pens. Now he has the same number of yellow and red pens. How many pens does he have in the end?
2 m
Fraction to units Equal stage after All change Units table

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