Compare 1/18 and 81/70
1st number: 1/18, 2nd number: 1 11/70
1/18 is smaller than 81/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
1/18 = 1 × 35/18 × 35 = 35/630 - 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
- 35/630 < 729/630 or 1/18 < 81/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18 and 81/70 1/36 and 81/70 3/18 and 81/70 1/54 and 81/70 5/18 and 81/70 1/90 and 81/70 7/18 and 81/70