Add 8/10 and 81/30
1st number: 8/10, 2nd number: 2 21/30
8/10 + 81/30 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
8/10 = 8 × 3/10 × 3 = 24/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Add the two like fractions:
24/30 + 81/30 = 24 + 81/30 = 105/30 - 105/30 simplified gives 7/2
- So, 8/10 + 81/30 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10+81/30 8/20+81/30 8/10+81/60 24/10+81/30 8/30+81/30 8/10+81/90 40/10+81/30 8/50+81/30 56/10+81/30 8/70+81/30