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Answers.everydaycalculation.com » Compare fractions

Compare 50/21 and 20/80

1st number: 2 8/21, 2nd number: 20/80

50/21 is greater than 20/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    50/21 = 50 × 80/21 × 80 = 4000/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    20/80 = 20 × 21/80 × 21 = 420/1680
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 4000/1680 > 420/1680 or 50/21 > 20/80

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