Answers

Solutions by everydaycalculation.com

Answers.everydaycalculation.com » Add fractions

Add 81/4 and 40/5

1st number: 20 1/4, 2nd number: 8 0/5

81/4 + 40/5 is 113/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    81/4 = 81 × 5/4 × 5 = 405/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    40/5 = 40 × 4/5 × 4 = 160/20
  4. Add the two like fractions:
    405/20 + 160/20 = 405 + 160/20 = 565/20
  5. 565/20 simplified gives 113/4
  6. So, 81/4 + 40/5 = 113/4
    In mixed form: 281/4

MathStep (Works offline)

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

Related:

© everydaycalculation.com