Compare 20/42 and 5/10
20/42 is smaller than 5/10
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,
20/42 = 20 × 5/42 × 5 = 100/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
5/10 = 5 × 21/10 × 21 = 105/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 100/210 < 105/210 or 20/42 < 5/10
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