Compare 21/2 and 72/10
1st number: 10 1/2, 2nd number: 7 2/10
21/2 is greater than 72/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
21/2 = 21 × 5/2 × 5 = 105/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
72/10 = 72 × 1/10 × 1 = 72/10 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/10 > 72/10 or 21/2 > 72/10
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