Compare 72/18 and 45/10
1st number: 4 0/18, 2nd number: 4 5/10
72/18 is smaller than 45/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
72/18 = 72 × 5/18 × 5 = 360/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
45/10 = 45 × 9/10 × 9 = 405/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 360/90 < 405/90 or 72/18 < 45/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18 and 90/10 72/36 and 45/10 72/18 and 45/20 72/54 and 45/10 72/18 and 45/30 72/90 and 45/10 72/18 and 45/50 72/18 and 45/70