PSLE Mathematics Problem Solving 2 — Questions and Answers
Question 1: A train travels at 80 km/h. How far will it travel in 2 hours and 30 minutes?
- 160 km
- 180 km
- 200 km (Correct answer)
- 240 km
Correct answer: 200 km
2 hours 30 minutes = 2.5 hours. Distance = speed × time = 80 × 2.5 = 200 km.
Question 2: A tank is 3/4 full of water. After 15 litres are added, it becomes completely full. What is the total capacity of the tank?
- 45 litres
- 60 litres (Correct answer)
- 75 litres
- 20 litres
Correct answer: 60 litres
If 3/4 is full, then 1/4 is empty. 1/4 of capacity = 15 litres. Total capacity = 15 × 4 = 60 litres.
Question 3: There are 450 students in a school. 2/5 of them are boys. How many girls are there?
- 180
- 270 (Correct answer)
- 225
- 300
Correct answer: 270
Boys: 2/5 × 450 = 180. Girls: 450 − 180 = 270.
Question 4: A piece of rope is 3.6 m long. It is cut into pieces of 0.4 m each. How many pieces are there?
- 8
- 9 (Correct answer)
- 10
- 7
Correct answer: 9
3.6 ÷ 0.4 = 9 pieces.
Question 5: Ali scored 75, 82, 68, 91, and 84 on five tests. What is his average score?
- 78
- 80 (Correct answer)
- 82
- 76
Correct answer: 80
Sum = 75 + 82 + 68 + 91 + 84 = 400. Average = 400 ÷ 5 = 80.
Question 6: A square has a perimeter of 48 cm. What is its area?
- 96 cm²
- 144 cm² (Correct answer)
- 192 cm²
- 576 cm²
Correct answer: 144 cm²
Side = 48 ÷ 4 = 12 cm. Area = 12 × 12 = 144 cm².
PSLE Mathematics Problem Solving 2
A train travels at 80 km/h.
How far will it travel in 2 hours and 30 minutes?