Add 21/20 and 1/4
1st number: 1 1/20, 2nd number: 1/4
21/20 + 1/4 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
21/20 = 21 × 1/20 × 1 = 21/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
1/4 = 1 × 5/4 × 5 = 5/20 - Add the two like fractions:
21/20 + 5/20 = 21 + 5/20 = 26/20 - 26/20 simplified gives 13/10
- So, 21/20 + 1/4 = 13/10
In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20+1/4 21/20+2/4 21/40+1/4 21/20+1/8 63/20+1/4 21/20+3/4 21/60+1/4 21/20+1/12 21/20+5/4 21/20+1/20 21/20+7/4 21/20+1/28