Compare 15/18 and 81/10
1st number: 15/18, 2nd number: 8 1/10
15/18 is smaller than 81/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
81/10 = 81 × 9/10 × 9 = 729/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 75/90 < 729/90 or 15/18 < 81/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18 and 81/10 15/36 and 81/10 15/18 and 81/20 45/18 and 81/10 15/54 and 81/10 15/18 and 81/30 75/18 and 81/10 15/90 and 81/10 15/18 and 81/50 15/18 and 81/70