Compare 45/36 and 81/30
1st number: 1 9/36, 2nd number: 2 21/30
45/36 is smaller than 81/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
45/36 = 45 × 5/36 × 5 = 225/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
81/30 = 81 × 6/30 × 6 = 486/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 225/180 < 486/180 or 45/36 < 81/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36 and 81/30 45/72 and 81/30 45/36 and 81/60 45/36 and 81/90