Compare 9/12 and 10/20
9/12 is greater than 10/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
10/20 = 10 × 3/20 × 3 = 30/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 45/60 > 30/60 or 9/12 > 10/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12 and 10/20 9/24 and 10/20 9/12 and 10/40 27/12 and 10/20 9/12 and 30/20 9/36 and 10/20 9/12 and 10/60 45/12 and 10/20 9/12 and 50/20 9/60 and 10/20 63/12 and 10/20 9/12 and 70/20 9/84 and 10/20