Add 10/8 and 81/20
1st number: 1 2/8, 2nd number: 4 1/20
10/8 + 81/20 is 53/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
10/8 = 10 × 5/8 × 5 = 50/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
81/20 = 81 × 2/20 × 2 = 162/40 - Add the two like fractions:
50/40 + 162/40 = 50 + 162/40 = 212/40 - 212/40 simplified gives 53/10
- So, 10/8 + 81/20 = 53/10
In mixed form: 53/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/8+81/20 10/16+81/20 10/8+81/40 30/8+81/20 10/24+81/20 10/8+81/60 50/8+81/20 10/40+81/20 70/8+81/20 10/56+81/20