Add 81/40 and 16/20
1st number: 2 1/40, 2nd number: 16/20
81/40 + 16/20 is 113/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
81/40 = 81 × 1/40 × 1 = 81/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
16/20 = 16 × 2/20 × 2 = 32/40 - Add the two like fractions:
81/40 + 32/40 = 81 + 32/40 = 113/40 - So, 81/40 + 16/20 = 113/40
In mixed form: 233/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40+32/20 81/80+16/20 81/40+16/40 81/40+48/20 81/40+16/60 81/40+80/20