Compare 10/5 and 45/80, Which fraction is greater?

Compare 10/5 and 45/80

1^st number: 2 0/5, 2^nd number: 45/80

10/5 is greater than 45/80

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 5 × 16 = 80,
10/5 = 10 × 16/5 × 16 = 160/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
45/80 = 45 × 1/80 × 1 = 45/80
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
160/80 > 45/80 or 10/5 > 45/80

MathStep (Works offline)

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