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Answers.everydaycalculation.com » Compare fractions

Compare 20/25 and 81/80

1st number: 20/25, 2nd number: 1 1/80

20/25 is smaller than 81/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 80 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 25 × 16 = 400,
    20/25 = 20 × 16/25 × 16 = 320/400
  3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
    81/80 = 81 × 5/80 × 5 = 405/400
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 320/400 < 405/400 or 20/25 < 81/80

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