Compare 80/20 and 54/21
1st number: 4 0/20, 2nd number: 2 12/21
80/20 is greater than 54/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
80/20 = 80 × 21/20 × 21 = 1680/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
54/21 = 54 × 20/21 × 20 = 1080/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1680/420 > 1080/420 or 80/20 > 54/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40 and 54/21 80/20 and 54/42 80/60 and 54/21 80/20 and 54/63