Add 4/10 and 81/80
1st number: 4/10, 2nd number: 1 1/80
4/10 + 81/80 is 113/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
4/10 = 4 × 8/10 × 8 = 32/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Add the two like fractions:
32/80 + 81/80 = 32 + 81/80 = 113/80 - So, 4/10 + 81/80 = 113/80
In mixed form: 133/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10+81/80 4/20+81/80 12/10+81/80 4/30+81/80 20/10+81/80 4/50+81/80 28/10+81/80 4/70+81/80