Add 8/10 and 81/4
1st number: 8/10, 2nd number: 20 1/4
8/10 + 81/4 is 421/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
8/10 = 8 × 2/10 × 2 = 16/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
81/4 = 81 × 5/4 × 5 = 405/20 - Add the two like fractions:
16/20 + 405/20 = 16 + 405/20 = 421/20 - So, 8/10 + 81/4 = 421/20
In mixed form: 211/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10+81/4 8/20+81/4 8/10+81/8 24/10+81/4 8/30+81/4 8/10+81/12 40/10+81/4 8/50+81/4 8/10+81/20 56/10+81/4 8/70+81/4 8/10+81/28