Write the fraction as a percent. \[ \frac{3}{10} \] $\frac{3}{10}=\square \%$ (Simplify your answer.)

Step 1 ：Define the numerator as 3 and the denominator as 10.

Step 2 ：Calculate the percentage by dividing the numerator by the denominator and then multiplying by 100.

Step 3 ：The result of the calculation is 30.0. This means that the fraction \( \frac{3}{10} \) is equivalent to 30.0%.

Step 4 ：Final Answer: \( \boxed{30.0\%} \)