Compare 18/27 and 15/20
18/27 is smaller than 15/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
18/27 = 18 × 20/27 × 20 = 360/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 360/540 < 405/540 or 18/27 < 15/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27 and 15/20 18/27 and 30/20 18/54 and 15/20 18/27 and 15/40 54/27 and 15/20 18/27 and 45/20 18/81 and 15/20 18/27 and 15/60 90/27 and 15/20 18/27 and 75/20