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Answers.everydaycalculation.com » Compare fractions

Compare 4/42 and 72/20

1st number: 4/42, 2nd number: 3 12/20

4/42 is smaller than 72/20

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 20 is 420
  2. For the 1st fraction, since 42 × 10 = 420,
    4/42 = 4 × 10/42 × 10 = 40/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    72/20 = 72 × 21/20 × 21 = 1512/420
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 40/420 < 1512/420 or 4/42 < 72/20

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