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Answers.everydaycalculation.com » Compare fractions

Compare 30/20 and 81/80

1st number: 1 10/20, 2nd number: 1 1/80

30/20 is greater than 81/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 80 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 20 × 4 = 80,
    30/20 = 30 × 4/20 × 4 = 120/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    81/80 = 81 × 1/80 × 1 = 81/80
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 120/80 > 81/80 or 30/20 > 81/80

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