Which of the following fractions has the greatest value?
- 35
- 58
- 712
- 23
Need a hint?
Try changing all the fractions so they have the same denominator. Then you can easily compare them by looking at the numerators.
Worked answer
- Convert all fractions to equivalent fractions with a common denominator of 120.
- 35 = 72120
- 58 = 75120
- 712 = 70120
- 23 = 80120
- Compare the numerators: 80 is the greatest.
- So 23 is the greatest fraction.
Answer: 23
The mistake this question tests
Habit
Calculation slip
Pupils might think 712 is the greatest because 7 is the biggest numerator, forgetting that the denominators are different.
How to fix it at home →Wrong answers children often give:
- 712 Calculation slip
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See the answer →Practise PSLE fractions until the mistakes stop.
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