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Answers.everydaycalculation.com » Compare fractions

Compare 20/81 and 8/40

20/81 is greater than 8/40

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 40 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 81 × 40 = 3240,
    20/81 = 20 × 40/81 × 40 = 800/3240
  3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
    8/40 = 8 × 81/40 × 81 = 648/3240
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 800/3240 > 648/3240 or 20/81 > 8/40

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