Compare 9/20 and 45/70
9/20 is smaller than 45/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
9/20 = 9 × 7/20 × 7 = 63/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/140 < 90/140 or 9/20 < 45/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20 and 45/70 9/20 and 90/70 9/40 and 45/70 27/20 and 45/70 9/60 and 45/70 45/20 and 45/70 63/20 and 45/70