Add 5/4 and 2/81
1st number: 1 1/4, 2nd number: 2/81
5/4 + 2/81 is 413/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
5/4 = 5 × 81/4 × 81 = 405/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
2/81 = 2 × 4/81 × 4 = 8/324 - Add the two like fractions:
405/324 + 8/324 = 405 + 8/324 = 413/324 - So, 5/4 + 2/81 = 413/324
In mixed form: 189/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+2/81 5/4+4/81 5/8+2/81 15/4+2/81 5/4+6/81 5/12+2/81 25/4+2/81 5/4+10/81 5/20+2/81 35/4+2/81 5/4+14/81 5/28+2/81