Compare 5/8 and 18/81
5/8 is greater than 18/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
5/8 = 5 × 81/8 × 81 = 405/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
18/81 = 18 × 8/81 × 8 = 144/648 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/648 > 144/648 or 5/8 > 18/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8 and 18/81 5/8 and 36/81 5/16 and 18/81 15/8 and 18/81 5/8 and 54/81 5/24 and 18/81 25/8 and 18/81 5/8 and 90/81 5/40 and 18/81 35/8 and 18/81 5/56 and 18/81