Compare 15/30 and 80/9
1st number: 15/30, 2nd number: 8 8/9
15/30 is smaller than 80/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
80/9 = 80 × 10/9 × 10 = 800/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 45/90 < 800/90 or 15/30 < 80/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/60 and 80/9 15/30 and 80/18 45/30 and 80/9 15/90 and 80/9 15/30 and 80/27 75/30 and 80/9 15/30 and 80/45 15/30 and 80/63