Compare 81/4 and 30/70
1st number: 20 1/4, 2nd number: 30/70
81/4 is greater than 30/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
81/4 = 81 × 35/4 × 35 = 2835/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
30/70 = 30 × 2/70 × 2 = 60/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2835/140 > 60/140 or 81/4 > 30/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4 and 60/70 81/8 and 30/70 81/4 and 90/70 81/12 and 30/70 81/20 and 30/70 81/28 and 30/70