51 P5.ST.JC.18121175
Level 3
Adam has 300 stickers in 3 colours.
40% of the stickers are blue.
The rest are red and yellow stickers in the ratio 2 : 3.
  1. What percentage of the stickers are yellow?
  2. How many red stickers are there?
3 m
Fraction to units Finding percent Percent of a set Ratio to units Combined repeated identity Remainder concept Units table Units manipulation
52 P5.ST.JC.18121177
Level 3
In a school, there is a total of 400 people.
30% are adults.
The rest are children.
The number of boys and girls is in the ratio of 2 : 5.
  1. What percentage of the people are boys?
  2. How many girls are there?
3 m
Ratio to units Finding percent Percent of a set Percent to units Combined repeated identity Remainder concept Units table
53 P5.ST.JC.18160201
Level 3
In a school, there is a total of 400 people.
30% are adults.
The rest are children.
The number of boys and girls is in the ratio of 5 : 9.
  1. What percentage of the people are boys?
  2. How many girls are there?
3 m
Ratio to units Finding percent Percent of a set Percent to units Combined repeated identity Remainder concept Units table Units manipulation
54 P6.DA.JC.15051410
Level 3 PSLE
A company offered 120 radios at 20% discount during a 7-day sale. The line graph shows the number of radios left unsold at the end of each day.
  1. On which day was the most number of radios sold? Give your answer in number. (Eg 1)
  2. What percentage of the 120 radios were sold in the first five days of the sale?
  3. During the sale, the discounted price of the radios was $60. After the sale, the remaining radios were sold without discount. What was the total amount of money collected from selling all 120 radios?
4 m
Line graph Min-max Finding percent Percent of a set Discount Remainder concept Model Part-whole
55 P6.PA.JM.18011216
Level 3
Study the patterns.
  1. Find the total number of triangles in Figure 30.
  2. Express the biggest triangle as a percentage of the total possible number of triangles in Figure 30. Correct your answer to 2 decimal places.
5 m
Equal intervals D Place values D Round off Finding percent

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