Compare 18/35 and 90/21
1st number: 18/35, 2nd number: 4 6/21
18/35 is smaller than 90/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
18/35 = 18 × 3/35 × 3 = 54/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
90/21 = 90 × 5/21 × 5 = 450/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 54/105 < 450/105 or 18/35 < 90/21
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