Add 81/2 and 25/8
1st number: 40 1/2, 2nd number: 3 1/8
81/2 + 25/8 is 349/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
81/2 = 81 × 4/2 × 4 = 324/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
25/8 = 25 × 1/8 × 1 = 25/8 - Add the two like fractions:
324/8 + 25/8 = 324 + 25/8 = 349/8 - So, 81/2 + 25/8 = 349/8
In mixed form: 435/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2+50/8 81/4+25/8 81/2+25/16 81/2+75/8 81/6+25/8 81/2+25/24 81/10+25/8 81/2+25/40 81/14+25/8 81/2+25/56