Compare 5/20 and 18/28
5/20 is smaller than 18/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
5/20 = 5 × 7/20 × 7 = 35/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 35/140 < 90/140 or 5/20 < 18/28
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