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Answers.everydaycalculation.com » Compare fractions

Compare 21/40 and 4/30

21/40 is greater than 4/30

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 30 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 40 × 3 = 120,
    21/40 = 21 × 3/40 × 3 = 63/120
  3. Likewise, for the 2nd fraction, since 30 × 4 = 120,
    4/30 = 4 × 4/30 × 4 = 16/120
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 63/120 > 16/120 or 21/40 > 4/30

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