Compare 20/15 and 25/18
1st number: 1 5/15, 2nd number: 1 7/18
20/15 is smaller than 25/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
25/18 = 25 × 5/18 × 5 = 125/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/90 < 125/90 or 20/15 < 25/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15 and 25/18 20/15 and 50/18 20/30 and 25/18 20/15 and 25/36 60/15 and 25/18 20/15 and 75/18 20/45 and 25/18 20/15 and 25/54 20/75 and 25/18 20/15 and 25/90