Compare 4/5 and 54/21
1st number: 4/5, 2nd number: 2 12/21
4/5 is smaller than 54/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
4/5 = 4 × 21/5 × 21 = 84/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
54/21 = 54 × 5/21 × 5 = 270/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/105 < 270/105 or 4/5 < 54/21
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 54/21 4/10 and 54/21 4/5 and 54/42 12/5 and 54/21 4/15 and 54/21 4/5 and 54/63 20/5 and 54/21 4/25 and 54/21 28/5 and 54/21 4/35 and 54/21