Compare 18/90 and 3/12
18/90 is smaller than 3/12
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
3/12 = 3 × 15/12 × 15 = 45/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/180 < 45/180 or 18/90 < 3/12
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