Compare 90/4 and 21/8
1st number: 22 2/4, 2nd number: 2 5/8
90/4 is greater than 21/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
90/4 = 90 × 2/4 × 2 = 180/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/8 > 21/8 or 90/4 > 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4 and 42/8 90/8 and 21/8 90/4 and 21/16 90/4 and 63/8 90/12 and 21/8 90/4 and 21/24 90/20 and 21/8 90/4 and 21/40 90/28 and 21/8 90/4 and 21/56