Compare 12/81 and 4/15
12/81 is smaller than 4/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 15 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
12/81 = 12 × 5/81 × 5 = 60/405 - Likewise, for the 2nd fraction, since 15 × 27 = 405,
4/15 = 4 × 27/15 × 27 = 108/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/405 < 108/405 or 12/81 < 4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/81 and 4/15 12/81 and 8/15 12/81 and 4/30 36/81 and 4/15 12/81 and 12/15 12/81 and 4/45 60/81 and 4/15 12/81 and 20/15 12/81 and 4/75 84/81 and 4/15 12/81 and 28/15