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Answers.everydaycalculation.com » Compare fractions

Compare 28/80 and 21/25

28/80 is smaller than 21/25

Steps for comparing fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 80 × 5 = 400,
    28/80 = 28 × 5/80 × 5 = 140/400
  3. Likewise, for the 2nd fraction, since 25 × 16 = 400,
    21/25 = 21 × 16/25 × 16 = 336/400
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 140/400 < 336/400 or 28/80 < 21/25

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