Compare 1/21 and 1/10
1/21 is smaller than 1/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
1/21 = 1 × 10/21 × 10 = 10/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 10/210 < 21/210 or 1/21 < 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21 and 1/10 1/21 and 2/10 1/42 and 1/10 1/21 and 1/20 3/21 and 1/10 1/21 and 3/10 1/63 and 1/10 1/21 and 1/30 5/21 and 1/10 1/21 and 5/10 1/21 and 1/50 7/21 and 1/10 1/21 and 7/10 1/21 and 1/70