Compare 1/5 and 42/81
1/5 is smaller than 42/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
1/5 = 1 × 81/5 × 81 = 81/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
42/81 = 42 × 5/81 × 5 = 210/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 81/405 < 210/405 or 1/5 < 42/81
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