Add 81/5 and 1/40
1st number: 16 1/5, 2nd number: 1/40
81/5 + 1/40 is 649/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
81/5 = 81 × 8/5 × 8 = 648/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
1/40 = 1 × 1/40 × 1 = 1/40 - Add the two like fractions:
648/40 + 1/40 = 648 + 1/40 = 649/40 - So, 81/5 + 1/40 = 649/40
In mixed form: 169/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/5+2/40 81/10+1/40 81/5+1/80 81/5+3/40 81/15+1/40 81/5+5/40 81/25+1/40 81/5+7/40 81/35+1/40