Compare 54/80 and 42/18
1st number: 54/80, 2nd number: 2 6/18
54/80 is smaller than 42/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
54/80 = 54 × 9/80 × 9 = 486/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
42/18 = 42 × 40/18 × 40 = 1680/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 486/720 < 1680/720 or 54/80 < 42/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/80 and 84/18 54/80 and 42/36 54/80 and 42/54 54/80 and 42/90