1 P5.PC.JM.17083125
Level 3
A pool was 60% full with water. When 40% of the water was drained, 72 ℓ of water remained in the pool. How much water can the pool hold?
3 m
Percent of a whole Percent of different bases Volume
2 P5.ST.JC.18121148
Level 3
Adam wants to buy a TV set.
The usual price of the TV set is $1000.
There is a storewide promotional discount of 20%.
As a privileged card member, he is entitled to another 10% discount of the discounted price.
How much does he pay for the TV set in all?
3 m
Percent of a whole Discount Percent of different bases Units method
3 P5.ST.JC.18121152
Level 2
Adam wants to buy a TV set. The usual price of the TV set is $1000.
As a privileged card member, he is entitled to a discount of 10%.
He needs to pay a GST of 5%.
  1. How much is the GST?
  2. How much does he pay for the TV set in all?
3 m
Percent of a whole Discount GST Percent of different bases
4 P5.ST.JC.18121153
Level 2
Adam has $1000 in his bank account.
The bank pays him an annual interest of 5%.
He does not deposit any more money.
  1. What is the interest after a year?
  2. How much will he have in his bank account after a year?
2 m
Percent of a whole Interest Percent of different bases
5 P5.PC.JM.17083189
Level 3
The cost price of a shirt is 30% less than that of the jacket. A profit of 25% is made when the jacket is sold for $50. What is the cost price of the shirt?
3 m
Percent to units Profit & loss Percent of different bases More than or less than Units method
6 P5.PC.JM.17083157
Level 2
The table shows the prices of a similar dress from two different malls.
  1. Which mall sells the dress at a cheaper price? (A or B)
  2. How much cheaper is the dress?
3 m
Discount Percent of different bases Table More than or less than
7 P5.PC.JM.17083181
Level 3
Alicia bought one camera at 20% discount off its original price. She paid a total of $107 for it, which was inclusive of 7% GST on the discounted price. What was the original price of the camera?
3 m
Discount GST Percent of different bases Table Units method
8 P5.RD.JM.17083261
Level 3
Annie had 23 as many stamps as Becky. The sum of the number of stamps Annie and Becky had was the same as the number of stamps that Callie had. After trading, Callie gave 20% of her stamps to Annie and received 25% of Becky's stamps. If Becky wanted to increase her number of stamps in the end by 25%, find the ratio of her number of stamps to the sum of Annie's and Callie's stamps in the end.
4 m
Fraction to units Finding ratio Percent of a whole Percent change by Percent to units Percent of different bases Times as many Internal transfer
9 P5.ST.JC.18121157
Level 3
Adam has some blue stickers and red stickers.
The number of blue stickers is increased by 20% to 60.
The number of red stickers is increased by 30% to 65.
  1. How many stickers are there at first?
  2. How many stickers are there in the end?
3 m
Percent of a set Percent change by Percent of different bases All change Units method
10 P5.ST.JC.18121158
Level 3
Adam has some blue stickers and red stickers.
The number of blue stickers is decreased by 20% to 160.
The number of red stickers is decreased by 30% to 70.
  1. How many stickers are there at first?
  2. How many stickers are there in the end?
3 m
Percent of a set Percent change by Percent of different bases All change Units method
11 P5.ST.JC.18121159
Level 3
Adam has some blue stickers and red stickers.
The number of blue stickers is increased by 20% to 60.
The number of red stickers is decreased by 30% to 70.
  1. How many stickers are there at first?
  2. How many stickers are there in the end?
3 m
Percent of a set Percent change by Percent of different bases All change Units method
12 P5.ST.JC.18121160
Level 3
If Adam's income is increased by 50% and
Bryan's amount is decreased by 30%,
both will get $2100 each.
  1. How much is Adam's income?
  2. How much is Bryan's income?
  3. What is the difference between Adam's income and Bryan's income?
3 m
Percent of a set Percent change by Percent of different bases Equal stage after All change Units method
13 P5.ST.JC.18121161
Level 3
Adam spends $300 of his income and saves the rest.
When he increases his spending by 10%, his savings decreased by 30%
  1. How much is Adam's savings at first?
  2. How much is Adam's savings in the end?
  3. How much is Adam's income?
3 m
Percent change by Percent of different bases Units method
14 P5.ST.JC.19021401
Level 3
If Adam's income increases 10% from $300 and then increases by another 10%, what is Adam's latest income?
3 m
Percent change by Percent of different bases Units method
15 P5.ST.JC.19021402
Level 3
If Adam's income decreases 10% from $330 and then decreases by another 10%, what is the new income?
3 m
Percent change by Percent of different bases Units method
16 P5.ST.JC.18121162
Level 3
If Adam's income increases 10% from $300 and then decreases by another 10%, what is Adam's latest income?
3 m
Percent change by Percent of different bases Units method
17 P5.ST.JC.18121163
Level 3
If Adam's income decreases 10% from $330 and then increases by another 10%, what is Adam's latest income?
3 m
Percent change by Percent of different bases Units method
18 P5.PC.JC.17083122
Level 3
Jane's savings is 20% more than Darwin's savings. If Jane's savings is decreased by 20%, their total savings will be $980. How much is Jane's savings?
3 m
Percent change by Percent of different bases Money More than or less than Unchanged quantity Units table Decimal units
19 P5.RD.JM.17083213
Level 3
50% of Amin's money was $350 less than Dave's money. When Amin spent 45% of her money and Dave spent 60% of his money, they had the same amount of money left. Find the amount of money Dave had at first.
4 m
Percent of a whole Percent to units Percent of different bases Money More than or less then Equal stage after Common numerator All change Units table
20 P5.PC.JM.17083119
Level 3
Patricia collected 120 foreign stamps and 80 local stamps. She gave 40% of the foreign stamps and 15% of the local stamps to Jack.
  1. How many stamps did Jack receive in all?
  2. What percentage of the stamps that Jack received were foreign stamps?
3 m
Finding percent Percent of a set Percent of different bases All change

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