Compare 80/81 and 7/30
80/81 is greater than 7/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 30 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
80/81 = 80 × 10/81 × 10 = 800/810 - Likewise, for the 2nd fraction, since 30 × 27 = 810,
7/30 = 7 × 27/30 × 27 = 189/810 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 800/810 > 189/810 or 80/81 > 7/30
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 14/30 80/81 and 7/60 80/81 and 21/30 80/81 and 7/90 80/81 and 35/30 80/81 and 49/30