Add 1/20 and 80/18
1st number: 1/20, 2nd number: 4 8/18
1/20 + 80/18 is 809/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
80/18 = 80 × 10/18 × 10 = 800/180 - Add the two like fractions:
9/180 + 800/180 = 9 + 800/180 = 809/180 - So, 1/20 + 80/18 = 809/180
In mixed form: 489/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+80/18 1/40+80/18 1/20+80/36 3/20+80/18 1/60+80/18 1/20+80/54 5/20+80/18 1/20+80/90 7/20+80/18