Add 1/20 and 45/40
1st number: 1/20, 2nd number: 1 5/40
1/20 + 45/40 is 47/40.
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,
1/20 = 1 × 2/20 × 2 = 2/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
45/40 = 45 × 1/40 × 1 = 45/40 - Add the two like fractions:
2/40 + 45/40 = 2 + 45/40 = 47/40 - So, 1/20 + 45/40 = 47/40
In mixed form: 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+45/40 1/20+90/40 1/40+45/40 1/20+45/80 3/20+45/40 1/60+45/40 5/20+45/40 7/20+45/40