Compare 18/70 and 10/20
18/70 is smaller than 10/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
18/70 = 18 × 2/70 × 2 = 36/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/140 < 70/140 or 18/70 < 10/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70 and 10/20 18/70 and 10/40 54/70 and 10/20 18/70 and 30/20 18/70 and 10/60 90/70 and 10/20 18/70 and 50/20 18/70 and 70/20