Add 1/2 and 45/40
1st number: 1/2, 2nd number: 1 5/40
1/2 + 45/40 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
1/2 = 1 × 20/2 × 20 = 20/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
45/40 = 45 × 1/40 × 1 = 45/40 - Add the two like fractions:
20/40 + 45/40 = 20 + 45/40 = 65/40 - 65/40 simplified gives 13/8
- So, 1/2 + 45/40 = 13/8
In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2+90/40 1/4+45/40 1/2+45/80 3/2+45/40 1/6+45/40 5/2+45/40 1/10+45/40 7/2+45/40 1/14+45/40