Compare 81/18 and 7/30
1st number: 4 9/18, 2nd number: 7/30
81/18 is greater than 7/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
7/30 = 7 × 3/30 × 3 = 21/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/90 > 21/90 or 81/18 > 7/30
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