Compare 1/45 and 4/81
1/45 is smaller than 4/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
1/45 = 1 × 9/45 × 9 = 9/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
4/81 = 4 × 5/81 × 5 = 20/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 9/405 < 20/405 or 1/45 < 4/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45 and 4/81 1/45 and 8/81 1/90 and 4/81 3/45 and 4/81 1/45 and 12/81 5/45 and 4/81 1/45 and 20/81 7/45 and 4/81 1/45 and 28/81