Compare 30/70 and 18/12
1st number: 30/70, 2nd number: 1 6/12
30/70 is smaller than 18/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
30/70 = 30 × 6/70 × 6 = 180/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
18/12 = 18 × 35/12 × 35 = 630/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/420 < 630/420 or 30/70 < 18/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70 and 18/12 30/70 and 36/12 30/70 and 18/24 90/70 and 18/12 30/70 and 54/12 30/70 and 18/36 30/70 and 90/12 30/70 and 18/60 30/70 and 18/84