Compare 5/81 and 4/5
5/81 is smaller than 4/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 5 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
5/81 = 5 × 5/81 × 5 = 25/405 - Likewise, for the 2nd fraction, since 5 × 81 = 405,
4/5 = 4 × 81/5 × 81 = 324/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 25/405 < 324/405 or 5/81 < 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/81 and 4/5 5/81 and 8/5 5/81 and 4/10 15/81 and 4/5 5/81 and 12/5 5/81 and 4/15 25/81 and 4/5 5/81 and 20/5 5/81 and 4/25 35/81 and 4/5 5/81 and 28/5 5/81 and 4/35