Compare 81/18 and 20/9
1st number: 4 9/18, 2nd number: 2 2/9
81/18 is greater than 20/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
81/18 = 81 × 1/18 × 1 = 81/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
20/9 = 20 × 2/9 × 2 = 40/18 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 81/18 > 40/18 or 81/18 > 20/9
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