Compare 72/20 and 3/90
1st number: 3 12/20, 2nd number: 3/90
72/20 is greater than 3/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
72/20 = 72 × 9/20 × 9 = 648/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
3/90 = 3 × 2/90 × 2 = 6/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 648/180 > 6/180 or 72/20 > 3/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20 and 6/90 72/40 and 3/90 72/20 and 9/90 72/60 and 3/90 72/20 and 15/90 72/20 and 21/90