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Answers.everydaycalculation.com » Compare fractions

Compare 90/81 and 50/40

1st number: 1 9/81, 2nd number: 1 10/40

90/81 is smaller than 50/40

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 40 is 3240

    Next, find the equivalent fraction of both fractional numbers with denominator 3240
  2. For the 1st fraction, since 81 × 40 = 3240,
    90/81 = 90 × 40/81 × 40 = 3600/3240
  3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
    50/40 = 50 × 81/40 × 81 = 4050/3240
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 3600/3240 < 4050/3240 or 90/81 < 50/40

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