Compare 21/10 and 4/81
1st number: 2 1/10, 2nd number: 4/81
21/10 is greater than 4/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
21/10 = 21 × 81/10 × 81 = 1701/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
4/81 = 4 × 10/81 × 10 = 40/810 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1701/810 > 40/810 or 21/10 > 4/81
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