Compare 21/25 and 9/20
21/25 is greater than 9/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
21/25 = 21 × 4/25 × 4 = 84/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
9/20 = 9 × 5/20 × 5 = 45/100 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/100 > 45/100 or 21/25 > 9/20
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