Compare 12/90 and 2/20
12/90 is greater than 2/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
2/20 = 2 × 9/20 × 9 = 18/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 24/180 > 18/180 or 12/90 > 2/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90 and 2/20 12/90 and 4/20 12/90 and 2/40 36/90 and 2/20 12/90 and 6/20 12/90 and 2/60 60/90 and 2/20 12/90 and 10/20 84/90 and 2/20 12/90 and 14/20