Compare 8/81 and 3/20
8/81 is smaller than 3/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
8/81 = 8 × 20/81 × 20 = 160/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
3/20 = 3 × 81/20 × 81 = 243/1620 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 160/1620 < 243/1620 or 8/81 < 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/81 and 3/20 8/81 and 6/20 8/81 and 3/40 24/81 and 3/20 8/81 and 9/20 8/81 and 3/60 40/81 and 3/20 8/81 and 15/20 56/81 and 3/20 8/81 and 21/20