Compare 3/45 and 4/18
3/45 is smaller than 4/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
3/45 = 3 × 2/45 × 2 = 6/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
4/18 = 4 × 5/18 × 5 = 20/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 6/90 < 20/90 or 3/45 < 4/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45 and 4/18 3/45 and 8/18 3/90 and 4/18 3/45 and 4/36 9/45 and 4/18 3/45 and 12/18 3/45 and 4/54 15/45 and 4/18 3/45 and 20/18 3/45 and 4/90 21/45 and 4/18 3/45 and 28/18