Add 10/20 and 42/25
1st number: 10/20, 2nd number: 1 17/25
10/20 + 42/25 is 109/50.
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,
10/20 = 10 × 5/20 × 5 = 50/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Add the two like fractions:
50/100 + 168/100 = 50 + 168/100 = 218/100 - 218/100 simplified gives 109/50
- So, 10/20 + 42/25 = 109/50
In mixed form: 29/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+84/25 10/40+42/25 10/20+42/50 30/20+42/25 10/60+42/25 10/20+42/75 50/20+42/25 70/20+42/25