21 P5.ST.JC.18121036
Level 2
Adam pays $20.60 for a marble, a bead and a sticker.
The marble costs $2.30 less than the bead.
The bead costs $1.90 less than the sticker.
What is the cost of 3 stickers more than 2 marbles?
3 m
D 4 operations More than or less than Units method
22 P3.ST.JC.18120822
Level 2
Fill in the blanks with units or unit equations.
70 children are in a school.
There are 30 less girls than boys.

  1. Number of boys = _____
  2. Number of more boys than girls = _____
  3. Total number of children = _____
  4. 1 u = _____
4 m
W Addition & subtraction Model Comparison Units method
23 P6.PC.NK.21060207
Level 3 PSLE
Ronnie had blue pens and red pens for sale. He sold 240 blue pens. 25% of the pens sold were red.
  1. How many blue pens and red pens did Ronnie sell altogether?
  2. He sold 40% of his pens. 70% of the pens left unsold were blue. How many red pens did Ronnie have at first?
4 m
Percent to units Percent of different bases All change Units table
24 P5.RD.JC.17083158
Level 1
Benson sawed off 23 of a stick. What is the ratio of the unsawed portion of the stick to the sawed portion of the stick?
1 m
Fraction of a whole F Addition & subtraction Fraction to units Finding ratio
25 P5.ST.JC.18121037
Level 3
Adam spends $24.70 on a sticker, a marble and a bead.
The marble costs $1.20 more than the bead.
The sticker costs 13 as much as the marble.
What is the cost of 3 stickers, 2 marbles and 4 beads?
4 m
Fraction to units D 4 operations More than or less than Units method
26 P6.ST.JC.18121308
Level 2
Find the value of 1 unit.
  1. 6 u - 15 = 1 - 2 u
  2. 1 - 2 u = 6 u - 15
  3. 5 u - 2 = 14 - 3 u
  4. 14 - 3 u = 5 u - 2
4 m
W 4 operations Units method Units equations
27 P6.PC.NK.21060206
Level 3 PSLE
A bookshop is having a book sale. The 1st book is at 10% discount. The 2nd book is at 20% discount. The price of the 2nd book should be equal or lower than the price of the 1st book.
  1. Kimmy's books were priced at $10 and $12. How much did she pay for them? 2 m
  2. Henry paid a total of $24.80 for his two books. He paid $4 more for the 1st book than for the 2nd book. What was the price of the 2nd book before discount? 3 m
5 m
Percent of a whole Discount Percent of different bases Money D 4 operations More than or less than Units table
28 P4.ST.JC.18120911
Level 1
Adam pays $10 in total for a sticker and a marble.
The sticker costs $6 more than the marble.
What is the cost of the sticker?
2 m
W Addition & subtraction Model Comparison Units method
29 P6.ST.JC.18121309
Level 2
Find the value of 1 unit.
  1. 7 u - 20 = 4 u + 10
  2. 4 u + 10 = 7 u - 20
  3. 4 u - 10 = 1 u + 20
  4. 1 u + 20 = 4 u - 10
4 m
W 4 operations Units equations
30 P6.PC.NK.21060208
Level 3 PSLE
Linda saved $240 in February. This amount was a 20% increase from what she saved in January. The amount she saved in March was a 30% decrease from what she saved in February.
  1. What was the total amount that Linda saved from January to March?
  2. What was the percentage increase in the amount Linda saved in March compared to January?
5 m
Percent to units Percent change by Percent of different bases Decimal units Units table

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