Compare 18/54 and 80/90
18/54 is smaller than 80/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
80/90 = 80 × 3/90 × 3 = 240/270 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/270 < 240/270 or 18/54 < 80/90
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