Compare 21/4 and 15/40
1st number: 5 1/4, 2nd number: 15/40
21/4 is greater than 15/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
21/4 = 21 × 10/4 × 10 = 210/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/40 > 15/40 or 21/4 > 15/40
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