Compare 81/5 and 15/18
1st number: 16 1/5, 2nd number: 15/18
81/5 is greater than 15/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
81/5 = 81 × 18/5 × 18 = 1458/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1458/90 > 75/90 or 81/5 > 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/5 and 30/18 81/10 and 15/18 81/5 and 15/36 81/5 and 45/18 81/15 and 15/18 81/5 and 15/54 81/5 and 75/18 81/25 and 15/18 81/5 and 15/90 81/35 and 15/18