Compare 8/72 and 21/30
8/72 is smaller than 21/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
8/72 = 8 × 5/72 × 5 = 40/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
21/30 = 21 × 12/30 × 12 = 252/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 40/360 < 252/360 or 8/72 < 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72 and 21/30 8/72 and 42/30 8/72 and 21/60 24/72 and 21/30 8/72 and 63/30 8/72 and 21/90 40/72 and 21/30 56/72 and 21/30