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Answers.everydaycalculation.com » Compare fractions

Compare 18/20 and 8/81

18/20 is greater than 8/81

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 81 is 1620
  2. For the 1st fraction, since 20 × 81 = 1620,
    18/20 = 18 × 81/20 × 81 = 1458/1620
  3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
    8/81 = 8 × 20/81 × 20 = 160/1620
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1458/1620 > 160/1620 or 18/20 > 8/81

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