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Answers.everydaycalculation.com » Compare fractions

Compare 10/7 and 21/20

1st number: 1 3/7, 2nd number: 1 1/20

10/7 is greater than 21/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    10/7 = 10 × 20/7 × 20 = 200/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    21/20 = 21 × 7/20 × 7 = 147/140
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 200/140 > 147/140 or 10/7 > 21/20

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