Compare 98/81 and 72/40
1st number: 1 17/81, 2nd number: 1 32/40
98/81 is smaller than 72/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 40 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 81 × 40 = 3240,
98/81 = 98 × 40/81 × 40 = 3920/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
72/40 = 72 × 81/40 × 81 = 5832/3240 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 3920/3240 < 5832/3240 or 98/81 < 72/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/81 and 72/80