To simplify \( 10^{-3} \), we can use the rule of exponents that states \( a^{-b} = \frac{1}{a^b} \).
Applying this to \( 10^{-3} \):
\[ 10^{-3} = \frac{1}{10^3} \]
Calculating \( 10^3 \):
\[ 10^3 = 1000 \]
Thus, we have:
\[ 10^{-3} = \frac{1}{1000} \]
From the given responses, the correct one that matches this simplification is:
\( \frac{1}{10^3} \)
So the answer is:
- \( \frac{1}{10^3} \): the fraction with numerator 1 and denominator 10 cubed.
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