Compare 81/4 and 21/8
1st number: 20 1/4, 2nd number: 2 5/8
81/4 is greater than 21/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
81/4 = 81 × 2/4 × 2 = 162/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 162/8 > 21/8 or 81/4 > 21/8
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