Compare 45/20 and 27/18
1st number: 2 5/20, 2nd number: 1 9/18
45/20 is greater than 27/18
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,
45/20 = 45 × 9/20 × 9 = 405/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
27/18 = 27 × 10/18 × 10 = 270/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/180 > 270/180 or 45/20 > 27/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20 and 27/18 45/20 and 54/18 45/40 and 27/18 45/20 and 27/36 45/20 and 81/18 45/60 and 27/18 45/20 and 27/54 45/20 and 27/90