Compare 81/25 and 21/18
1st number: 3 6/25, 2nd number: 1 3/18
81/25 is greater than 21/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
81/25 = 81 × 18/25 × 18 = 1458/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1458/450 > 525/450 or 81/25 > 21/18
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