Compare 30/81 and 2/4
30/81 is smaller than 2/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
30/81 = 30 × 4/81 × 4 = 120/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
2/4 = 2 × 81/4 × 81 = 162/324 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/324 < 162/324 or 30/81 < 2/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81 and 2/4 30/81 and 2/8 90/81 and 2/4 30/81 and 6/4 30/81 and 2/12 30/81 and 10/4 30/81 and 2/20 30/81 and 14/4 30/81 and 2/28