Compare 45/2 and 81/40
1st number: 22 1/2, 2nd number: 2 1/40
45/2 is greater than 81/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
45/2 = 45 × 20/2 × 20 = 900/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
81/40 = 81 × 1/40 × 1 = 81/40 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 900/40 > 81/40 or 45/2 > 81/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2 and 81/40 45/4 and 81/40 45/2 and 81/80 45/6 and 81/40 45/10 and 81/40 45/14 and 81/40