Compare 15/45 and 30/4
1st number: 15/45, 2nd number: 7 2/4
15/45 is smaller than 30/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
30/4 = 30 × 45/4 × 45 = 1350/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 60/180 < 1350/180 or 15/45 < 30/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45 and 30/4 15/45 and 60/4 15/90 and 30/4 15/45 and 30/8 15/45 and 90/4 15/45 and 30/12 75/45 and 30/4 15/45 and 30/20 15/45 and 30/28