Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Compare fractions

Compare 81/15 and 20/72

1st number: 5 6/15, 2nd number: 20/72

81/15 is greater than 20/72

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 15 × 24 = 360,
    81/15 = 81 × 24/15 × 24 = 1944/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 1944/360 > 100/360 or 81/15 > 20/72

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

© everydaycalculation.com