Compare 30/35 and 21/18
1st number: 30/35, 2nd number: 1 3/18
30/35 is smaller than 21/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
30/35 = 30 × 18/35 × 18 = 540/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
21/18 = 21 × 35/18 × 35 = 735/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 540/630 < 735/630 or 30/35 < 21/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35 and 21/18 30/35 and 42/18 30/70 and 21/18 30/35 and 21/36 90/35 and 21/18 30/35 and 63/18 30/35 and 21/54 30/35 and 21/90