Compare 81/18 and 70/50
1st number: 4 9/18, 2nd number: 1 20/50
81/18 is greater than 70/50
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
81/18 = 81 × 25/18 × 25 = 2025/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
70/50 = 70 × 9/50 × 9 = 630/450 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2025/450 > 630/450 or 81/18 > 70/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/36 and 70/50 81/54 and 70/50 81/90 and 70/50