Compare 15/36 and 20/30
15/36 is smaller than 20/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
15/36 = 15 × 5/36 × 5 = 75/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
20/30 = 20 × 6/30 × 6 = 120/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 75/180 < 120/180 or 15/36 < 20/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/36 and 20/30 15/36 and 40/30 15/72 and 20/30 15/36 and 20/60 45/36 and 20/30 15/36 and 60/30 15/36 and 20/90 75/36 and 20/30