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Answers.everydaycalculation.com » Compare fractions

Compare 10/21 and 21/10

1st number: 10/21, 2nd number: 2 1/10

10/21 is smaller than 21/10

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    10/21 = 10 × 10/21 × 10 = 100/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    21/10 = 21 × 21/10 × 21 = 441/210
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 100/210 < 441/210 or 10/21 < 21/10

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