Compare 81/4 and 45/72
1st number: 20 1/4, 2nd number: 45/72
81/4 is greater than 45/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
81/4 = 81 × 18/4 × 18 = 1458/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
45/72 = 45 × 1/72 × 1 = 45/72 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1458/72 > 45/72 or 81/4 > 45/72
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