Add 40/20 and 81/16
1st number: 2 0/20, 2nd number: 5 1/16
40/20 + 81/16 is 113/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
40/20 = 40 × 4/20 × 4 = 160/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Add the two like fractions:
160/80 + 405/80 = 160 + 405/80 = 565/80 - 565/80 simplified gives 113/16
- So, 40/20 + 81/16 = 113/16
In mixed form: 71/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20+81/16 40/20+81/32 40/60+81/16 40/20+81/48 40/20+81/80