Compare 40/81 and 84/12
1st number: 40/81, 2nd number: 7 0/12
40/81 is smaller than 84/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
40/81 = 40 × 4/81 × 4 = 160/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
84/12 = 84 × 27/12 × 27 = 2268/324 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 160/324 < 2268/324 or 40/81 < 84/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/81 and 84/12 40/81 and 84/24 40/81 and 84/36 40/81 and 84/60