At a drink stall, Amir's container has a capacity of 438 L, Bella's container has a capacity of 4 L 275 mL, and Chen's container has a capacity of 4.3 L. Arrange the containers from the greatest capacity to the smallest.
- Bella's, Amir's, Chen's
- Amir's, Chen's, Bella's
- Chen's, Bella's, Amir's
- Amir's, Bella's, Chen's
Need a hint?
Convert all three capacities into litres before comparing them.
Worked answer
- 438 L: 3 ÷ 8 = 0.375, so Amir's container holds 4.375 L.
- 4 L 275 mL: 275 mL = 0.275 L, so Bella's container holds 4.275 L.
- 4.3 L = 4.300 L, so Chen's container holds 4 L 300 mL.
- Compare: 4.375 L > 4.300 L > 4.275 L.
- From the greatest to the smallest: Amir's, Chen's, Bella's.
Answer: Amir's, Chen's, Bella's L
The mistake this question tests
Habit
Converting units (kg, ℓ, m, cm³)
A pupil may think 4 L 275 mL is more than 4.3 L because 275 is bigger than 3. But 4.3 L = 4 L 300 mL, which is more than 4 L 275 mL.
How to fix it at home →Wrong answers children often give:
- Amir's, Bella's, Chen's Converting units (kg, ℓ, m, cm³)
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See the answer →Practise PSLE measurement until the mistakes stop.
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