Compare 18/42 and 9/10
18/42 is smaller than 9/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
9/10 = 9 × 21/10 × 21 = 189/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/210 < 189/210 or 18/42 < 9/10
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