Compare 21/28 and 42/10
1st number: 21/28, 2nd number: 4 2/10
21/28 is smaller than 42/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
42/10 = 42 × 14/10 × 14 = 588/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/140 < 588/140 or 21/28 < 42/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28 and 42/10 21/28 and 84/10 21/56 and 42/10 21/28 and 42/20 63/28 and 42/10 21/84 and 42/10 21/28 and 42/30 21/28 and 42/50 21/28 and 42/70