Concept 4 of 11Foundation
Watch on YouTubeVideoComparing & ordering fractions
Three methods:
- Same denominator? Larger numerator wins. 3/7 < 5/7.
- Same numerator? Smaller denominator wins (bigger pieces). 1/3 > 1/5.
- Different both? Find LCM of denominators, rewrite, then compare.
Or convert to decimals: 3/4 = 0.75, 2/3 ≈ 0.67 → 3/4 is bigger.
Example
Compare 5/8 and 7/12.
LCM(8, 12) = 24. 5/8 = 15/24, 7/12 = 14/24. So 5/8 > 7/12.
LCM(8, 12) = 24. 5/8 = 15/24, 7/12 = 14/24. So 5/8 > 7/12.
💡 Tip:When options are close, cross-multiply: 5×12 vs 7×8 → 60 vs 56 → 5/8 is bigger.
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5 questions to check what you just read.
0 / 5
- Q1.Which is largest?
- Q2.Which is smallest?
- Q3.Compare 5/8 and 7/12. Greater is:
- Q4.Arrange smallest to largest: 2/3, 1/2, 3/4.
- Q5.Which is between 1/4 and 1/2?