Compare 18/28 and 90/45
1st number: 18/28, 2nd number: 2 0/45
18/28 is smaller than 90/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 810/1260 < 2520/1260 or 18/28 < 90/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28 and 90/45 18/56 and 90/45 54/28 and 90/45 18/84 and 90/45 90/28 and 90/45