Compare 5/21 and 45/8
1st number: 5/21, 2nd number: 5 5/8
5/21 is smaller than 45/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
5/21 = 5 × 8/21 × 8 = 40/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
45/8 = 45 × 21/8 × 21 = 945/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 40/168 < 945/168 or 5/21 < 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21 and 45/8 5/21 and 90/8 5/42 and 45/8 5/21 and 45/16 15/21 and 45/8 5/63 and 45/8 5/21 and 45/24 25/21 and 45/8 5/21 and 45/40 35/21 and 45/8 5/21 and 45/56