Compare 10/20 and 28/40
10/20 is smaller than 28/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
10/20 = 10 × 2/20 × 2 = 20/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 20/40 < 28/40 or 10/20 < 28/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20 and 56/40 10/40 and 28/40 10/20 and 28/80 30/20 and 28/40 10/20 and 84/40 10/60 and 28/40 50/20 and 28/40 70/20 and 28/40