Compare 20/25 and 45/80
20/25 is greater than 45/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
20/25 = 20 × 16/25 × 16 = 320/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
45/80 = 45 × 5/80 × 5 = 225/400 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 320/400 > 225/400 or 20/25 > 45/80
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