Add 3/20 and 45/40
1st number: 3/20, 2nd number: 1 5/40
3/20 + 45/40 is 51/40.
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,
3/20 = 3 × 2/20 × 2 = 6/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
45/40 = 45 × 1/40 × 1 = 45/40 - Add the two like fractions:
6/40 + 45/40 = 6 + 45/40 = 51/40 - So, 3/20 + 45/40 = 51/40
In mixed form: 111/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+45/40 3/20+90/40 3/40+45/40 3/20+45/80 9/20+45/40 3/60+45/40 15/20+45/40 21/20+45/40