Compare 2/64 and 21/5, Which fraction is greater?

Compare 2/64 and 21/5

1^st number: 2/64, 2^nd number: 4 1/5

2/64 is smaller than 21/5

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 5 is 320

Next, find the equivalent fraction of both fractional numbers with denominator 320
For the 1st fraction, since 64 × 5 = 320,
2/64 = 2 × 5/64 × 5 = 10/320
Likewise, for the 2nd fraction, since 5 × 64 = 320,
21/5 = 21 × 64/5 × 64 = 1344/320
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
10/320 < 1344/320 or 2/64 < 21/5

MathStep (Works offline)

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