Compare 8/18 and 45/40
1st number: 8/18, 2nd number: 1 5/40
8/18 is smaller than 45/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
8/18 = 8 × 20/18 × 20 = 160/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 160/360 < 405/360 or 8/18 < 45/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18 and 45/40 8/18 and 90/40 8/36 and 45/40 8/18 and 45/80 24/18 and 45/40 8/54 and 45/40 40/18 and 45/40 8/90 and 45/40 56/18 and 45/40