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Answers.everydaycalculation.com » Compare fractions

Compare 1/2 and 21/7

1st number: 1/2, 2nd number: 3 0/7

1/2 is smaller than 21/7

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 7 is 14

    Next, find the equivalent fraction of both fractional numbers with denominator 14
  2. For the 1st fraction, since 2 × 7 = 14,
    1/2 = 1 × 7/2 × 7 = 7/14
  3. Likewise, for the 2nd fraction, since 7 × 2 = 14,
    21/7 = 21 × 2/7 × 2 = 42/14
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 7/14 < 42/14 or 1/2 < 21/7

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