Compare 21/70 and 2/40
21/70 is greater than 2/40
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,
21/70 = 21 × 4/70 × 4 = 84/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/280 > 14/280 or 21/70 > 2/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70 and 2/40 21/70 and 4/40 21/70 and 2/80 63/70 and 2/40 21/70 and 6/40 21/70 and 10/40 21/70 and 14/40