Compare 4/90 and 18/50
4/90 is smaller than 18/50
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
4/90 = 4 × 5/90 × 5 = 20/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
18/50 = 18 × 9/50 × 9 = 162/450 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 20/450 < 162/450 or 4/90 < 18/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90 and 18/50 4/90 and 36/50 12/90 and 18/50 4/90 and 54/50 20/90 and 18/50 4/90 and 90/50 28/90 and 18/50