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Answers.everydaycalculation.com » Compare fractions

Compare 81/64 and 7/20

1st number: 1 17/64, 2nd number: 7/20

81/64 is greater than 7/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 20 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 64 × 5 = 320,
    81/64 = 81 × 5/64 × 5 = 405/320
  3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
    7/20 = 7 × 16/20 × 16 = 112/320
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 405/320 > 112/320 or 81/64 > 7/20

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