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Answers.everydaycalculation.com » Compare fractions

Compare 21/4 and 84/8

1st number: 5 1/4, 2nd number: 10 4/8

21/4 is smaller than 84/8

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8
  2. For the 1st fraction, since 4 × 2 = 8,
    21/4 = 21 × 2/4 × 2 = 42/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    84/8 = 84 × 1/8 × 1 = 84/8
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 42/8 < 84/8 or 21/4 < 84/8

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