Primary 5 Maths Weighted Assessment 2 (WA2) – Paper 4

1. Tom used 600 g of sugar to make cookies. Sam used 300 g more than Tom. Lily used twice as much sugar as Sam.
How much sugar did Lily use?

Answer: kg

📖 REMINDER: Work step by step through each comparison. Convert grams to kilograms for final answer if needed.

WA2,HPSP,2024,TestHPSPWA22024,Arithmetic

2. 10 years ago, the ratio of Sarah's age to Ben's age to Chris's age was 4 : 1 : 3.
Chris is 40 years old now. What is Sarah's age now?

Answer: years old

📖 REMINDER: Use the current age to find the past ages using the ratio, then add the time difference to find current ages of others.

WA2,HPSP,2024,TestHPSPWA22024,Ratio & Proportion

3. After Sarah spent ²⁄₅ of her savings on a phone and a laptop, she had $3600 left.
Given that the phone cost 3 times as much as the laptop, find the cost of the laptop.

Answer: $

📖 REMINDER: First find total savings from the fraction spent, then use the ratio between items to find individual costs.

WA2,HPSP,2024,TestHPSPWA22024,Fractions & Ratio

4. A pet shop has a total of 720 fish consisting of betta fish, tetra fish, and danio fish.
¹⁄₄ of the fish are betta fish, ¹⁄₈ of the fish are tetra fish, and the rest are danio fish.

(a) What fraction of the fish are danio fish?

Answer: (a)

(b) How many more danio fish than betta fish are there?

Answer:  (b) danio fish

📖 REMINDER: Add the given fractions, subtract from 1 to find remaining fraction, then convert fractions to actual numbers.

WA2,HPSP,2024,TestHPSPWA22024,Fractions

5. On Monday, Liam ran 2.15 km. Each day, he ran 425 m more than the day before.
What is the total distance he would have run in 1 week? Express your answer as a decimal in kilometres.

Answer: km

📖 REMINDER: Convert all measurements to the same units (km or m) before calculating. Use arithmetic sequence formula for the sum.

WA2,HPSP,2024,TestHPSPWA22024,Arithmetic Sequence

6. The table shows the cost of green and yellow T-shirts. 

Mr Tan bought green and yellow T-shirts in the ratio 3 : 2. He paid $260 for all the T-shirts. How many green T-shirts did he buy?

Answer: green T-shirts

📖 REMINDER: Think of the ratio as "sets" of T-shirts. Calculate cost per set, then find how many sets were bought.

WA2,HPSP,2024,TestHPSPWA22024,Ratio & Arithmetic

7. Ben has some boxes of rice and some boxes of beans. He has 10 more boxes of rice than boxes of beans.
Each box of rice weighs 3 kg. Each box of beans weighs 4.5 kg. The total mass of all the boxes of rice and
boxes of beans is 330 kg. How many such boxes of rice does Ben have?

Answer: boxes of rice

📖 REMINDER: First make the quantities equal by temporarily adding or removing the extra items, then adjust.

WA2,HPSP,2024,TestHPSPWA22024,Arithmetic

8. A rectangular tank measures 40 cm by 15 cm by 12 cm.
The tank will be filled to its brim after 6 liters of water is added into it.
What is the volume of water in the tank now?

Answer: liters

📖 REMINDER: Calculate full tank volume from dimensions, then subtract water needed to fill it.

WA2,HPSP,2024,TestHPSPWA22024,Geometry & Volume