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Answers.everydaycalculation.com » Compare fractions

Compare 72/30 and 81/80

1st number: 2 12/30, 2nd number: 1 1/80

72/30 is greater than 81/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 30 × 8 = 240,
    72/30 = 72 × 8/30 × 8 = 576/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    81/80 = 81 × 3/80 × 3 = 243/240
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 576/240 > 243/240 or 72/30 > 81/80

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