Compare 80/50 and 90/70
1st number: 1 30/50, 2nd number: 1 20/70
80/50 is greater than 90/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
80/50 = 80 × 7/50 × 7 = 560/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
90/70 = 90 × 5/70 × 5 = 450/350 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 560/350 > 450/350 or 80/50 > 90/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: