Compare 42/80 and 27/20
1st number: 42/80, 2nd number: 1 7/20
42/80 is smaller than 27/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
27/20 = 27 × 4/20 × 4 = 108/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/80 < 108/80 or 42/80 < 27/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80 and 27/20 42/80 and 54/20 42/80 and 27/40 42/80 and 81/20 42/80 and 27/60