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Answers.everydaycalculation.com » Compare fractions

Compare 21/70 and 25/42

21/70 is smaller than 25/42

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 70 × 3 = 210,
    21/70 = 21 × 3/70 × 3 = 63/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    25/42 = 25 × 5/42 × 5 = 125/210
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 63/210 < 125/210 or 21/70 < 25/42

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