Compare 21/4 and 28/80
1st number: 5 1/4, 2nd number: 28/80
21/4 is greater than 28/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
21/4 = 21 × 20/4 × 20 = 420/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/80 > 28/80 or 21/4 > 28/80
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