Compare 18/45 and 20/16
1st number: 18/45, 2nd number: 1 4/16
18/45 is smaller than 20/16
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
18/45 = 18 × 16/45 × 16 = 288/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
20/16 = 20 × 45/16 × 45 = 900/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 288/720 < 900/720 or 18/45 < 20/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45 and 20/16 18/45 and 40/16 18/90 and 20/16 18/45 and 20/32 54/45 and 20/16 18/45 and 60/16 18/45 and 20/48 90/45 and 20/16 18/45 and 20/80