Compare 75/80 and 42/40
1st number: 75/80, 2nd number: 1 2/40
75/80 is smaller than 42/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
75/80 = 75 × 1/80 × 1 = 75/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
42/40 = 42 × 2/40 × 2 = 84/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 75/80 < 84/80 or 75/80 < 42/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/80 and 84/40 75/80 and 42/80