What fraction of 2 hours is 45 minutes? Give your answer in its simplest form.
Need a hint?
Change 2 hours into minutes first.
Worked answer
- 2 hours = 120 minutes.
- 45 minutes as a fraction of 120 minutes = 45120.
- 45 ÷ 15 = 3 and 120 ÷ 15 = 8, so the answer is 38.
Answer: 3/8
The mistake this question tests
Habit
Simplest form in final fraction answers
45/120 is right but not finished: 45 and 120 can both be divided by 15.
How to fix it at home →Wrong answers children often give:
- 45/2 Converting units (kg, ℓ, m, cm³)
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See the answer →Practise PSLE fractions until the mistakes stop.
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