Compare 4/5 and 21/54
4/5 is greater than 21/54
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 5 × 54 = 270,
4/5 = 4 × 54/5 × 54 = 216/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 216/270 > 105/270 or 4/5 > 21/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5 and 21/54 4/5 and 42/54 4/10 and 21/54 12/5 and 21/54 4/5 and 63/54 4/15 and 21/54 20/5 and 21/54 4/25 and 21/54 28/5 and 21/54 4/35 and 21/54