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Answers.everydaycalculation.com » Compare fractions

Compare 18/28 and 90/80

1st number: 18/28, 2nd number: 1 10/80

18/28 is smaller than 90/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 28 × 20 = 560,
    18/28 = 18 × 20/28 × 20 = 360/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    90/80 = 90 × 7/80 × 7 = 630/560
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 360/560 < 630/560 or 18/28 < 90/80

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