Compare 9/90 and 21/8
1st number: 9/90, 2nd number: 2 5/8
9/90 is smaller than 21/8
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,
9/90 = 9 × 4/90 × 4 = 36/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
21/8 = 21 × 45/8 × 45 = 945/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/360 < 945/360 or 9/90 < 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90 and 21/8 9/90 and 42/8 9/90 and 21/16 27/90 and 21/8 9/90 and 63/8 9/90 and 21/24 45/90 and 21/8 9/90 and 21/40 63/90 and 21/8 9/90 and 21/56