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Answers.everydaycalculation.com » Compare fractions

Compare 80/21 and 10/42

1st number: 3 17/21, 2nd number: 10/42

80/21 is greater than 10/42

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 42 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 21 × 2 = 42,
    80/21 = 80 × 2/21 × 2 = 160/42
  3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
    10/42 = 10 × 1/42 × 1 = 10/42
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 160/42 > 10/42 or 80/21 > 10/42

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