Compare 20/27 and 80/40, Which fraction is greater?

Compare 20/27 and 80/40

1^st number: 20/27, 2^nd number: 2 0/40

20/27 is smaller than 80/40

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 27 × 40 = 1080,
20/27 = 20 × 40/27 × 40 = 800/1080
Likewise, for the 2nd fraction, since 40 × 27 = 1080,
80/40 = 80 × 27/40 × 27 = 2160/1080
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
800/1080 < 2160/1080 or 20/27 < 80/40

MathStep (Works offline)

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