Compare 81/8 and 30/18
1st number: 10 1/8, 2nd number: 1 12/18
81/8 is greater than 30/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
81/8 = 81 × 9/8 × 9 = 729/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
30/18 = 30 × 4/18 × 4 = 120/72 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 729/72 > 120/72 or 81/8 > 30/18
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