Add 1/20 and 81/10
1st number: 1/20, 2nd number: 8 1/10
1/20 + 81/10 is 163/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
1/20 = 1 × 1/20 × 1 = 1/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
81/10 = 81 × 2/10 × 2 = 162/20 - Add the two like fractions:
1/20 + 162/20 = 1 + 162/20 = 163/20 - So, 1/20 + 81/10 = 163/20
In mixed form: 83/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+81/10 1/40+81/10 1/20+81/20 3/20+81/10 1/60+81/10 1/20+81/30 5/20+81/10 1/20+81/50 7/20+81/10 1/20+81/70