Compare 5/15 and 80/30
1st number: 5/15, 2nd number: 2 20/30
5/15 is smaller than 80/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
5/15 = 5 × 2/15 × 2 = 10/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
80/30 = 80 × 1/30 × 1 = 80/30 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 10/30 < 80/30 or 5/15 < 80/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15 and 80/30 5/30 and 80/30 5/15 and 80/60 5/45 and 80/30 5/15 and 80/90 25/15 and 80/30 5/75 and 80/30 35/15 and 80/30