Add 1/4 and 81/80
1st number: 1/4, 2nd number: 1 1/80
1/4 + 81/80 is 101/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
1/4 = 1 × 20/4 × 20 = 20/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Add the two like fractions:
20/80 + 81/80 = 20 + 81/80 = 101/80 - So, 1/4 + 81/80 = 101/80
In mixed form: 121/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4+81/80 1/8+81/80 3/4+81/80 1/12+81/80 5/4+81/80 1/20+81/80 7/4+81/80 1/28+81/80