Add 21/20 and 1/25
1st number: 1 1/20, 2nd number: 1/25
21/20 + 1/25 is 109/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
21/20 = 21 × 5/20 × 5 = 105/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
1/25 = 1 × 4/25 × 4 = 4/100 - Add the two like fractions:
105/100 + 4/100 = 105 + 4/100 = 109/100 - So, 21/20 + 1/25 = 109/100
In mixed form: 19/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20+1/25 21/20+2/25 21/40+1/25 21/20+1/50 63/20+1/25 21/20+3/25 21/60+1/25 21/20+1/75 21/20+5/25 21/20+7/25