Compare 21/48 and 5/81
21/48 is greater than 5/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 48 × 27 = 1296,
21/48 = 21 × 27/48 × 27 = 567/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
5/81 = 5 × 16/81 × 16 = 80/1296 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 567/1296 > 80/1296 or 21/48 > 5/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48 and 5/81 21/48 and 10/81 21/96 and 5/81 63/48 and 5/81 21/48 and 15/81 21/48 and 25/81 21/48 and 35/81