Compare 5/81 and 10/5, Which fraction is greater?

Compare 5/81 and 10/5

1^st number: 5/81, 2^nd number: 2 0/5

5/81 is smaller than 10/5

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 5 is 405

Next, find the equivalent fraction of both fractional numbers with denominator 405
For the 1st fraction, since 81 × 5 = 405,
5/81 = 5 × 5/81 × 5 = 25/405
Likewise, for the 2nd fraction, since 5 × 81 = 405,
10/5 = 10 × 81/5 × 81 = 810/405
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
25/405 < 810/405 or 5/81 < 10/5

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad