Compare 81/90 and 2/7
81/90 is greater than 2/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
2/7 = 2 × 90/7 × 90 = 180/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 567/630 > 180/630 or 81/90 > 2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90 and 4/7 81/90 and 2/14 81/90 and 6/7 81/90 and 2/21 81/90 and 10/7 81/90 and 2/35 81/90 and 14/7 81/90 and 2/49