Compare 21/10 and 8/81
1st number: 2 1/10, 2nd number: 8/81
21/10 is greater than 8/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
21/10 = 21 × 81/10 × 81 = 1701/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
8/81 = 8 × 10/81 × 10 = 80/810 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1701/810 > 80/810 or 21/10 > 8/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10 and 8/81 21/10 and 16/81 21/20 and 8/81 63/10 and 8/81 21/10 and 24/81 21/30 and 8/81 21/10 and 40/81 21/50 and 8/81 21/10 and 56/81 21/70 and 8/81