The correct answer is:
$\frac{1}{8}$
Explanation
To convert a decimal to a fraction, write the decimal over the appropriate power of 10 (based on the number of decimal places) and then simplify.
Steps:
- First step: $$0.125=\frac{125}{1000}$$
- Second step: Find the greatest common divisor: $\gcd(125,1000)=125$, so $$\frac{125}{1000}=\frac{125\div125}{1000\div125}$$
- Final step: $$\frac{125}{1000}=\frac{1}{8}$$
Therefore, $0.125$ in simplest fractional form is $\frac{1}{8}$. (Check: $\frac{1}{8}=0.125$.)