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Answers.everydaycalculation.com » Compare fractions

Compare 42/45 and 1/20

42/45 is greater than 1/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    42/45 = 42 × 4/45 × 4 = 168/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    1/20 = 1 × 9/20 × 9 = 9/180
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 168/180 > 9/180 or 42/45 > 1/20

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