Compare 4/12 and 45/20
1st number: 4/12, 2nd number: 2 5/20
4/12 is smaller than 45/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
4/12 = 4 × 5/12 × 5 = 20/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
45/20 = 45 × 3/20 × 3 = 135/60 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 20/60 < 135/60 or 4/12 < 45/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12 and 45/20 4/12 and 90/20 4/24 and 45/20 4/12 and 45/40 4/36 and 45/20 4/12 and 45/60 20/12 and 45/20 4/60 and 45/20 28/12 and 45/20 4/84 and 45/20