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Answers.everydaycalculation.com » Compare fractions

Compare 21/2 and 1/5

1st number: 10 1/2, 2nd number: 1/5

21/2 is greater than 1/5

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 5 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 2 × 5 = 10,
    21/2 = 21 × 5/2 × 5 = 105/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    1/5 = 1 × 2/5 × 2 = 2/10
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 105/10 > 2/10 or 21/2 > 1/5

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