Add 8/10 and 5/20
8/10 + 5/20 is 21/20.
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,
8/10 = 8 × 2/10 × 2 = 16/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
5/20 = 5 × 1/20 × 1 = 5/20 - Add the two like fractions:
16/20 + 5/20 = 16 + 5/20 = 21/20 - So, 8/10 + 5/20 = 21/20
In mixed form: 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10+5/20 8/10+10/20 8/20+5/20 8/10+5/40 24/10+5/20 8/10+15/20 8/30+5/20 8/10+5/60 40/10+5/20 8/10+25/20 8/50+5/20 56/10+5/20 8/10+35/20 8/70+5/20