Compare 25/80 and 30/81
25/80 is smaller than 30/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 81 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 80 × 81 = 6480,
25/80 = 25 × 81/80 × 81 = 2025/6480 - Likewise, for the 2nd fraction, since 81 × 80 = 6480,
30/81 = 30 × 80/81 × 80 = 2400/6480 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2025/6480 < 2400/6480 or 25/80 < 30/81
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