Compare 81/21 and 25/16
1st number: 3 18/21, 2nd number: 1 9/16
81/21 is greater than 25/16
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
81/21 = 81 × 16/21 × 16 = 1296/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
25/16 = 25 × 21/16 × 21 = 525/336 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1296/336 > 525/336 or 81/21 > 25/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/21 and 50/16 81/42 and 25/16 81/21 and 25/32 81/21 and 75/16 81/63 and 25/16 81/21 and 25/48 81/21 and 25/80