Compare 18/72 and 98/90
1st number: 18/72, 2nd number: 1 8/90
18/72 is smaller than 98/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
98/90 = 98 × 4/90 × 4 = 392/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/360 < 392/360 or 18/72 < 98/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/72 and 98/90 54/72 and 98/90 90/72 and 98/90