Compare 90/81 and 21/10
1st number: 1 9/81, 2nd number: 2 1/10
90/81 is smaller than 21/10
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 10 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
90/81 = 90 × 10/81 × 10 = 900/810 - Likewise, for the 2nd fraction, since 10 × 81 = 810,
21/10 = 21 × 81/10 × 81 = 1701/810 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 900/810 < 1701/810 or 90/81 < 21/10
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