Convert Decimal 0.3 to Fraction: Step-by-Step Solution

To solve this problem, let's convert the decimal 0.3 into a fraction:

• Step 1: Identify the place value of 0.3.
  Since the decimal 0.3 has one digit after the decimal point, it is in the tenths place. This means that 0.3 is equivalent to 3 tenths, or $\frac{3}{10}$.
• Step 2: Write the fraction based on the place value:
  The decimal 0.3 is expressed as $\frac{3}{10}$, where 3 is the numerator and 10 is the denominator, reflective of the tenths place.
• Step 3: Verify the answer using multiple-choice options:
  Among the choices provided, $\frac{3}{10}$ is the correct match, which corresponds to choice 3.

Therefore, the correct fraction representation for 0.3 is $\frac{3}{10}$.