Compare 21/84 and 10/8
1st number: 21/84, 2nd number: 1 2/8
21/84 is smaller than 10/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
21/84 = 21 × 2/84 × 2 = 42/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/168 < 210/168 or 21/84 < 10/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84 and 10/8 21/84 and 20/8 21/84 and 10/16 63/84 and 10/8 21/84 and 30/8 21/84 and 10/24 21/84 and 50/8 21/84 and 10/40 21/84 and 70/8 21/84 and 10/56