Compare 81/30 and 10/45
1st number: 2 21/30, 2nd number: 10/45
81/30 is greater than 10/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
10/45 = 10 × 2/45 × 2 = 20/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 243/90 > 20/90 or 81/30 > 10/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30 and 20/45 81/60 and 10/45 81/30 and 10/90 81/30 and 30/45 81/90 and 10/45 81/30 and 50/45 81/30 and 70/45