Compare 18/90 and 9/8
1st number: 18/90, 2nd number: 1 1/8
18/90 is smaller than 9/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
9/8 = 9 × 45/8 × 45 = 405/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/360 < 405/360 or 18/90 < 9/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90 and 9/8 18/90 and 18/8 18/90 and 9/16 54/90 and 9/8 18/90 and 27/8 18/90 and 9/24 18/90 and 45/8 18/90 and 9/40 18/90 and 63/8 18/90 and 9/56