Compare 18/54 and 18/81
18/54 is greater than 18/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 54 × 3 = 162,
18/54 = 18 × 3/54 × 3 = 54/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
18/81 = 18 × 2/81 × 2 = 36/162 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 54/162 > 36/162 or 18/54 > 18/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54 and 18/81 18/54 and 36/81 18/54 and 54/81 90/54 and 18/81 18/54 and 90/81