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Answers.everydaycalculation.com » Compare fractions

Compare 30/70 and 18/80

30/70 is greater than 18/80

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    30/70 = 30 × 8/70 × 8 = 240/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    18/80 = 18 × 7/80 × 7 = 126/560
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 240/560 > 126/560 or 30/70 > 18/80

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