Compare 30/60 and 12/90
30/60 is greater than 12/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
30/60 = 30 × 3/60 × 3 = 90/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/180 > 24/180 or 30/60 > 12/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60 and 24/90 90/60 and 12/90 30/60 and 36/90 30/60 and 60/90 30/60 and 84/90