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Answers.everydaycalculation.com » Compare fractions

Compare 20/81 and 40/20

1st number: 20/81, 2nd number: 2 0/20

20/81 is smaller than 40/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 20 is 1620

    Next, find the equivalent fraction of both fractional numbers with denominator 1620
  2. For the 1st fraction, since 81 × 20 = 1620,
    20/81 = 20 × 20/81 × 20 = 400/1620
  3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
    40/20 = 40 × 81/20 × 81 = 3240/1620
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 400/1620 < 3240/1620 or 20/81 < 40/20

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