Compare 40/81 and 3/72
40/81 is greater than 3/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 72 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
40/81 = 40 × 8/81 × 8 = 320/648 - Likewise, for the 2nd fraction, since 72 × 9 = 648,
3/72 = 3 × 9/72 × 9 = 27/648 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 320/648 > 27/648 or 40/81 > 3/72
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