Compare 81/18 and 30/5
1st number: 4 9/18, 2nd number: 6 0/5
81/18 is smaller than 30/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
30/5 = 30 × 18/5 × 18 = 540/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/90 < 540/90 or 81/18 < 30/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18 and 60/5 81/36 and 30/5 81/18 and 30/10 81/18 and 90/5 81/54 and 30/5 81/18 and 30/15 81/90 and 30/5 81/18 and 30/25 81/18 and 30/35