Compare 9/20 and 15/18
9/20 is smaller than 15/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
15/18 = 15 × 10/18 × 10 = 150/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 81/180 < 150/180 or 9/20 < 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20 and 15/18 9/20 and 30/18 9/40 and 15/18 9/20 and 15/36 27/20 and 15/18 9/20 and 45/18 9/60 and 15/18 9/20 and 15/54 45/20 and 15/18 9/20 and 75/18 9/20 and 15/90 63/20 and 15/18