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Answers.everydaycalculation.com » Compare fractions

Compare 10/5 and 21/18

1st number: 2 0/5, 2nd number: 1 3/18

10/5 is greater than 21/18

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 18 is 90
  2. For the 1st fraction, since 5 × 18 = 90,
    10/5 = 10 × 18/5 × 18 = 180/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 180/90 > 105/90 or 10/5 > 21/18

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