Compare 70/90 and 50/70
70/90 is greater than 50/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
50/70 = 50 × 9/70 × 9 = 450/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 490/630 > 450/630 or 70/90 > 50/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: