Compare 6/21 and 21/20
1st number: 6/21, 2nd number: 1 1/20
6/21 is smaller than 21/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
6/21 = 6 × 20/21 × 20 = 120/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
21/20 = 21 × 21/20 × 21 = 441/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/420 < 441/420 or 6/21 < 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/21 and 21/20 6/21 and 42/20 6/42 and 21/20 6/21 and 21/40 18/21 and 21/20 6/21 and 63/20 6/63 and 21/20 6/21 and 21/60 30/21 and 21/20 42/21 and 21/20