Compare 3/28 and 45/21
1st number: 3/28, 2nd number: 2 3/21
3/28 is smaller than 45/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
3/28 = 3 × 3/28 × 3 = 9/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
45/21 = 45 × 4/21 × 4 = 180/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 9/84 < 180/84 or 3/28 < 45/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28 and 45/21 3/28 and 90/21 3/56 and 45/21 3/28 and 45/42 9/28 and 45/21 3/84 and 45/21 3/28 and 45/63 15/28 and 45/21 21/28 and 45/21