Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Compare fractions

Compare 42/20 and 40/18

1st number: 2 2/20, 2nd number: 2 4/18

42/20 is smaller than 40/18

Steps for comparing fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 18 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    42/20 = 42 × 9/20 × 9 = 378/180
  3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
    40/18 = 40 × 10/18 × 10 = 400/180
  4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
  5. 378/180 < 400/180 or 42/20 < 40/18

MathStep (Works offline)

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

Related:

© everydaycalculation.com