Add 10/40 and 21/50
10/40 + 21/50 is 67/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
10/40 = 10 × 5/40 × 5 = 50/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
21/50 = 21 × 4/50 × 4 = 84/200 - Add the two like fractions:
50/200 + 84/200 = 50 + 84/200 = 134/200 - 134/200 simplified gives 67/100
- So, 10/40 + 21/50 = 67/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+21/50 10/40+42/50 10/80+21/50 30/40+21/50 10/40+63/50 50/40+21/50 70/40+21/50