Compare 50/45 and 81/70
1st number: 1 5/45, 2nd number: 1 11/70
50/45 is smaller than 81/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
50/45 = 50 × 14/45 × 14 = 700/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
81/70 = 81 × 9/70 × 9 = 729/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 700/630 < 729/630 or 50/45 < 81/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90 and 81/70