Add 20/10 and 81/20
1st number: 2 0/10, 2nd number: 4 1/20
20/10 + 81/20 is 121/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
20/10 = 20 × 2/10 × 2 = 40/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
81/20 = 81 × 1/20 × 1 = 81/20 - Add the two like fractions:
40/20 + 81/20 = 40 + 81/20 = 121/20 - So, 20/10 + 81/20 = 121/20
In mixed form: 61/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10+81/20 20/10+81/40 60/10+81/20 20/30+81/20 20/10+81/60 20/50+81/20 20/70+81/20