Compare 30/80 and 42/54
30/80 is smaller than 42/54
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
30/80 = 30 × 27/80 × 27 = 810/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
42/54 = 42 × 40/54 × 40 = 1680/2160 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 810/2160 < 1680/2160 or 30/80 < 42/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80 and 42/54 30/80 and 84/54 90/80 and 42/54