Compare 30/70 and 3/40
30/70 is greater than 3/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
30/70 = 30 × 4/70 × 4 = 120/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 120/280 > 21/280 or 30/70 > 3/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70 and 3/40 30/70 and 6/40 30/70 and 3/80 90/70 and 3/40 30/70 and 9/40 30/70 and 15/40 30/70 and 21/40