Level 2
In a room, ⁵₇ of the girls wore cardigans. After 86 girls who wore cardigans left the room, the percentage of girls who wore cardigans decreased to 10%. How many girls in the room did not wear cardigans?

Level 3
Fill in the blanks in whole numbers or decimals.
2 boys, Adam and Bryan, share some stickers.
Bryan has 20% of the total stickers.
If Bryan receives extra stickers,
his number of stickers increases to 30%.

1. Number of stickers that Bryan has at first = _____ u
2. Change in the number of stickers that Bryan has = _____ u
3. Number of stickers that Adam has at first = _____ u
4. Number of stickers that Adam has in the end = _____ u

Level 3
Fill in the blanks.
Number of boys at first is 30% of the children.
Number of boys is then increased to 40%.

1. Number of boys at first = _____ u
2. Number of boys in the end = _____ u
3. Increase in the number of boys = _____ u
4. Number of children in the end = _____ u

Level 3
Fill in the blanks.
Number of boys at first is 40% of the children.
Number of boys is then decreased to 30%.

1. Number of boys at first = _____ u
2. Number of boys in the end = _____ u
3. Decrease in the number of boys = _____ u
4. Number of children in the end = _____ u

Level 3 PSLE
At first, the ratio of the number of boys to the number of girls in a club was 4 : 1. After 10 boys and 10 girls joined the club, the ratio became 3 : 1.

1. Did the percentage of members who were girls increase (1), decrease (2) or remain the same (3)? Give your answer in number. (Eg Increase = 1)
2. In the end, how many boys were there in the club?

Level 3
Some adult passengers are on a coach. If 25 tourists alight from the coach, the percentage of locals will increase from 15% to 40%. How many passengers are there in the coach?

Level 3
In a box, there are some mangosteens and lemons. If 80 more lemons are put into the box, the percentage of mangosteens will decrease from 70% to 30%. How many mangosteens are there in the box?

Level 3
A store owner had 505 kg of fresh honeydews. The honeydews contained 60% water when fresh. One week later, there was only 50% water left in the honeydews. What was the mass of the honeydews one week later?

Level 3
The petrol tank of Fred's convertible was 80% empty. He went to the petrol kiosk and topped up 25ℓ of petrol. When he reached the theme park, the petrol tank was 90% full. Given that he used 4ℓ of fuel to get to the theme park from the kiosk, find the capacity of the petrol tank.

Level 3
After 20 minutes into a race, Daniel has run ⁵₈ of the route while Piolo has covered only ³₈ of the distance. Daniel runs at the same average speed throughout the race and Piolo's average speed is 60 m/min slower than Daniel's. If Piolo wants to finish the race at the same time as Daniel, by how many percent should he increase his average speed by for the remaining part of the race? Round off the answer to the nearest whole number.