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Answers.everydaycalculation.com » Compare fractions

Compare 42/10 and 80/18

1st number: 4 2/10, 2nd number: 4 8/18

42/10 is smaller than 80/18

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 10 × 9 = 90,
    42/10 = 42 × 9/10 × 9 = 378/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    80/18 = 80 × 5/18 × 5 = 400/90
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 378/90 < 400/90 or 42/10 < 80/18

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