Compare 6/72 and 21/20
1st number: 6/72, 2nd number: 1 1/20
6/72 is smaller than 21/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
6/72 = 6 × 5/72 × 5 = 30/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
21/20 = 21 × 18/20 × 18 = 378/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 30/360 < 378/360 or 6/72 < 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/72 and 21/20 6/72 and 42/20 6/72 and 21/40 18/72 and 21/20 6/72 and 63/20 6/72 and 21/60 30/72 and 21/20 42/72 and 21/20