Compare 30/45 and 80/4
1st number: 30/45, 2nd number: 20 0/4
30/45 is smaller than 80/4
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,
30/45 = 30 × 4/45 × 4 = 120/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
80/4 = 80 × 45/4 × 45 = 3600/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/180 < 3600/180 or 30/45 < 80/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45 and 80/4 30/90 and 80/4 30/45 and 80/8 90/45 and 80/4 30/45 and 80/12 30/45 and 80/20 30/45 and 80/28