Compare 18/28 and 90/40
1st number: 18/28, 2nd number: 2 10/40
18/28 is smaller than 90/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
18/28 = 18 × 10/28 × 10 = 180/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/280 < 630/280 or 18/28 < 90/40
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 90/40 18/56 and 90/40 18/28 and 90/80 54/28 and 90/40 18/84 and 90/40 90/28 and 90/40