Compare 5/24 and 21/81
5/24 is smaller than 21/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 24 × 27 = 648,
5/24 = 5 × 27/24 × 27 = 135/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
21/81 = 21 × 8/81 × 8 = 168/648 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 135/648 < 168/648 or 5/24 < 21/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/24 and 21/81 5/24 and 42/81 5/48 and 21/81 15/24 and 21/81 5/24 and 63/81 5/72 and 21/81 25/24 and 21/81 35/24 and 21/81