Add 10/40 and 5/20
10/40 + 5/20 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
10/40 = 10 × 1/40 × 1 = 10/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
5/20 = 5 × 2/20 × 2 = 10/40 - Add the two like fractions:
10/40 + 10/40 = 10 + 10/40 = 20/40 - 20/40 simplified gives 1/2
- So, 10/40 + 5/20 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+5/20 10/40+10/20 10/80+5/20 10/40+5/40 30/40+5/20 10/40+15/20 10/40+5/60 50/40+5/20 10/40+25/20 70/40+5/20 10/40+35/20