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Answers.everydaycalculation.com » Compare fractions

Compare 20/5 and 81/7

1st number: 4 0/5, 2nd number: 11 4/7

20/5 is smaller than 81/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 7 is 35

    Next, find the equivalent fraction of both fractional numbers with denominator 35
  2. For the 1st fraction, since 5 × 7 = 35,
    20/5 = 20 × 7/5 × 7 = 140/35
  3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
    81/7 = 81 × 5/7 × 5 = 405/35
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 140/35 < 405/35 or 20/5 < 81/7

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