Compare 15/20 and 36/18
1st number: 15/20, 2nd number: 2 0/18
15/20 is smaller than 36/18
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,
15/20 = 15 × 9/20 × 9 = 135/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
36/18 = 36 × 10/18 × 10 = 360/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 135/180 < 360/180 or 15/20 < 36/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20 and 36/18 15/20 and 72/18 15/40 and 36/18 45/20 and 36/18 15/60 and 36/18 15/20 and 36/54 75/20 and 36/18 15/20 and 36/90