Arrange the following fractions from the smallest to the greatest: 85, 136, 214
- 85, 136, 214
- 136, 85, 214
- 214, 136, 85
- 214, 85, 136
Need a hint?
Convert 214 to an improper fraction first, then find a common denominator to compare all three fractions easily.
Worked answer
- Convert all fractions to improper fractions: 85, 136, 94
- Find a common denominator (60): 9660, 13060, 13560
- Compare the numerators: 96 < 130 < 135
- So the order is: 85, 136, 214
The mistake this question tests
Simplest form in final fraction answers
Pupils might compare only the numerators or only the denominators without converting to a common denominator, leading to incorrect ordering.
How to fix it at home →Wrong answers children often give:
- 136, 85, 214 Calculation slip
- 214, 136, 85 Calculation slip
- 214, 85, 136 Calculation slip
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See the answer →Practise PSLE fractions until the mistakes stop.
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