Compare 15/50 and 90/21
1st number: 15/50, 2nd number: 4 6/21
15/50 is smaller than 90/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
90/21 = 90 × 50/21 × 50 = 4500/1050 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 315/1050 < 4500/1050 or 15/50 < 90/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/50 and 90/21 15/50 and 90/42 45/50 and 90/21 15/50 and 90/63 75/50 and 90/21