Compare 4/18 and 21/56
4/18 is smaller than 21/56
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
4/18 = 4 × 28/18 × 28 = 112/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 112/504 < 189/504 or 4/18 < 21/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18 and 21/56 4/18 and 42/56 4/36 and 21/56 12/18 and 21/56 4/18 and 63/56 4/54 and 21/56 20/18 and 21/56 4/90 and 21/56 28/18 and 21/56