Chadwick Bolton
04/28/2024 · Junior High School
Which fraction results in a terminating decimal? \( \frac{1}{12} \) \( \frac{4}{9} \) \( \frac{2}{15} \) \( \frac{7}{8} \)
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Step-by-step Solution
A fraction results in a terminating decimal if, when it is in its simplest form, the denominator has only the prime factors 2 and/or 5.
Let's analyze each of the given fractions:
1. **\( \frac{1}{12} \)**:
- The prime factorization of 12 is \( 2^2 \times 3 \).
- Since 3 is a prime factor other than 2 or 5, \( \frac{1}{12} \) does not result in a terminating decimal.
2. **\( \frac{4}{9} \)**:
- The prime factorization of 9 is \( 3^2 \).
- Since 3 is a prime factor other than 2 or 5, \( \frac{4}{9} \) does not result in a terminating decimal.
3. **\( \frac{2}{15} \)**:
- The prime factorization of 15 is \( 3 \times 5 \).
- Since 3 is a prime factor other than 2 or 5, \( \frac{2}{15} \) does not result in a terminating decimal.
4. **\( \frac{7}{8} \)**:
- The prime factorization of 8 is \( 2^3 \).
- Since the only prime factor is 2, \( \frac{7}{8} \) results in a terminating decimal.
Thus, the fraction that results in a terminating decimal is:
\[
\frac{7}{8}
\]
Quick Answer
\( \frac{7}{8} \)
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