Add 10/16 and 21/20
1st number: 10/16, 2nd number: 1 1/20
10/16 + 21/20 is 67/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
10/16 = 10 × 5/16 × 5 = 50/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
21/20 = 21 × 4/20 × 4 = 84/80 - Add the two like fractions:
50/80 + 84/80 = 50 + 84/80 = 134/80 - 134/80 simplified gives 67/40
- So, 10/16 + 21/20 = 67/40
In mixed form: 127/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/16+21/20 10/16+42/20 10/32+21/20 10/16+21/40 30/16+21/20 10/16+63/20 10/48+21/20 10/16+21/60 50/16+21/20 10/80+21/20 70/16+21/20