Compare 18/30 and 20/18
1st number: 18/30, 2nd number: 1 2/18
18/30 is smaller than 20/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
20/18 = 20 × 5/18 × 5 = 100/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 54/90 < 100/90 or 18/30 < 20/18
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