Compare 60/30 and 21/9
1st number: 2 0/30, 2nd number: 2 3/9
60/30 is smaller than 21/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
60/30 = 60 × 3/30 × 3 = 180/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/90 < 210/90 or 60/30 < 21/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/30 and 42/9 60/30 and 21/18 60/30 and 63/9 60/90 and 21/9 60/30 and 21/27 60/30 and 21/45 60/30 and 21/63