Compare 6/10 and 18/21
6/10 is smaller than 18/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
6/10 = 6 × 21/10 × 21 = 126/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
18/21 = 18 × 10/21 × 10 = 180/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 126/210 < 180/210 or 6/10 < 18/21
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