21 P6.PC.TL.16010131
Level 3
Henry, Jack and Liam sold some calculators. Liam sold 30% of the total number of calculators sold by Jack and Henry. Henry sold 20% of the total number of calculators sold by Jack and Liam. Jack sold 87 more calculators than Liam. Find the total number of calculators sold by all the boys.
3 m
Percent of a set Percent to units Percent of different bases Unchanged total Units table
22 P6.DA.JC.23030802
Level 2
The pie charts show the number of each type of stationery in boxes, A and B. The total number of stationery in Box A is twice the total number of stationery in Box B.
  1. Find the percentage of erasers in Box A.
  2. What fraction of stationery in Box B is erasers?
  3. The number of erasers in Box A is 40. Find the number of erasers in Box B.
3 m
Pie chart Right angle Fraction of a set Percent of a set Times as many Units method
23 P6.RD.TL.16010190
Level 3
The ratio of blue to purple stamps Eva had was 5 : 2. The cost of each of the blue stamps was $1 and the cost of each of the purple stamps was $2. Eva sold 40% of the blue stamps and the total cost of the unsold stamps was $455. How many blue stamps did she have left?
4 m
Ratio to units Percent of a set Money Number x value Units table
24 P6.RD.JC.19082902
Level 3
Fabian, Gilbert and Henry had some marbles in the ratio of 2 : 3 : 5. Henry gave 40% of his marbles to Fabian and Gilbert. As a result, Fabian had the same number of marbles as Gilbert and Henry had 36 fewer marbles than Fabian.
  1. What was the percentage increase in Fabian's marbles after receiving from Henry?
  2. How many marbles did Gilbert have at first?
4 m
Ratio to units Percent of a set Percent change by More than or less than Equal stage after Internal transfer Units table Decimal units
25 P6.PA.JC.19091410
Level 3 PSLE
Study the pattern.
  1. Find the total number of white and grey triangles in Figure 100.
  2. Find the percentage of grey triangles in Figure 100. (Give the answer in decimals.)
4 m
Equal intervals Repeated pattern Square numbers Percent of a set

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