Compare 81/42 and 1/21
1st number: 1 39/42, 2nd number: 1/21
81/42 is greater than 1/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 81/42 > 2/42 or 81/42 > 1/21
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