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Answers.everydaycalculation.com » Compare fractions

Compare 70/80 and 80/90

70/80 is smaller than 80/90

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 90 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    70/80 = 70 × 9/80 × 9 = 630/720
  3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
    80/90 = 80 × 8/90 × 8 = 640/720
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 630/720 < 640/720 or 70/80 < 80/90

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