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Answers.everydaycalculation.com » Compare fractions

Compare 30/15 and 81/80

1st number: 2 0/15, 2nd number: 1 1/80

30/15 is greater than 81/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    30/15 = 30 × 16/15 × 16 = 480/240
  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. 480/240 > 243/240 or 30/15 > 81/80

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