Compare 21/20 and 48/18
1st number: 1 1/20, 2nd number: 2 12/18
21/20 is smaller than 48/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
21/20 = 21 × 9/20 × 9 = 189/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
48/18 = 48 × 10/18 × 10 = 480/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/180 < 480/180 or 21/20 < 48/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20 and 48/18 21/20 and 96/18 21/40 and 48/18 21/20 and 48/36 63/20 and 48/18 21/60 and 48/18 21/20 and 48/54 21/20 and 48/90