Add 81/10 and 9/40
1st number: 8 1/10, 2nd number: 9/40
81/10 + 9/40 is 333/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
81/10 = 81 × 4/10 × 4 = 324/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Add the two like fractions:
324/40 + 9/40 = 324 + 9/40 = 333/40 - So, 81/10 + 9/40 = 333/40
In mixed form: 813/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/10+18/40 81/20+9/40 81/10+9/80 81/10+27/40 81/30+9/40 81/10+45/40 81/50+9/40 81/10+63/40 81/70+9/40