Compare 7/18 and 81/40
1st number: 7/18, 2nd number: 2 1/40
7/18 is smaller than 81/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
7/18 = 7 × 20/18 × 20 = 140/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 140/360 < 729/360 or 7/18 < 81/40
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