Add 8/20 and 4/40
8/20 + 4/40 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
8/20 = 8 × 2/20 × 2 = 16/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
4/40 = 4 × 1/40 × 1 = 4/40 - Add the two like fractions:
16/40 + 4/40 = 16 + 4/40 = 20/40 - 20/40 simplified gives 1/2
- So, 8/20 + 4/40 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+4/40 8/20+8/40 8/40+4/40 8/20+4/80 24/20+4/40 8/20+12/40 8/60+4/40 40/20+4/40 8/20+20/40 56/20+4/40 8/20+28/40