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Answers.everydaycalculation.com » Compare fractions

Compare 90/9 and 81/20

1st number: 10 0/9, 2nd number: 4 1/20

90/9 is greater than 81/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 9 × 20 = 180,
    90/9 = 90 × 20/9 × 20 = 1800/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    81/20 = 81 × 9/20 × 9 = 729/180
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1800/180 > 729/180 or 90/9 > 81/20

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