Compare 18/80 and 20/50
18/80 is smaller than 20/50
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 50 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
18/80 = 18 × 5/80 × 5 = 90/400 - Likewise, for the 2nd fraction, since 50 × 8 = 400,
20/50 = 20 × 8/50 × 8 = 160/400 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/400 < 160/400 or 18/80 < 20/50
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