Compare 12/40 and 3/81
12/40 is greater than 3/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
12/40 = 12 × 81/40 × 81 = 972/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
3/81 = 3 × 40/81 × 40 = 120/3240 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 972/3240 > 120/3240 or 12/40 > 3/81
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