Compare 5/18 and 42/90
5/18 is smaller than 42/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
5/18 = 5 × 5/18 × 5 = 25/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 25/90 < 42/90 or 5/18 < 42/90
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