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Answers.everydaycalculation.com » Compare fractions

Compare 28/80 and 21/5

1st number: 28/80, 2nd number: 4 1/5

28/80 is smaller than 21/5

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 5 is 80

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

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