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Answers.everydaycalculation.com » Compare fractions

Compare 20/42 and 9/10

20/42 is smaller than 9/10

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 10 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    20/42 = 20 × 5/42 × 5 = 100/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    9/10 = 9 × 21/10 × 21 = 189/210
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 100/210 < 189/210 or 20/42 < 9/10

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