Add 25/8 and 2/81
1st number: 3 1/8, 2nd number: 2/81
25/8 + 2/81 is 2041/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
25/8 = 25 × 81/8 × 81 = 2025/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
2/81 = 2 × 8/81 × 8 = 16/648 - Add the two like fractions:
2025/648 + 16/648 = 2025 + 16/648 = 2041/648 - So, 25/8 + 2/81 = 2041/648
In mixed form: 397/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/8+2/81 25/8+4/81 25/16+2/81 75/8+2/81 25/8+6/81 25/24+2/81 25/8+10/81 25/40+2/81 25/8+14/81 25/56+2/81