Compare 1/30 and 21/70
1/30 is smaller than 21/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
1/30 = 1 × 7/30 × 7 = 7/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 7/210 < 63/210 or 1/30 < 21/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30 and 21/70 1/30 and 42/70 1/60 and 21/70 3/30 and 21/70 1/30 and 63/70 1/90 and 21/70 5/30 and 21/70 7/30 and 21/70