To convert 0.2 into a fraction, we can express it as follows:
0.2 is equal to \( \frac{2}{10} \).
To simplify this fraction, we can divide both the numerator and the denominator by their greatest common divisor, which is 2:
\[ \frac{2 \div 2}{10 \div 2} = \frac{1}{5} \]
Thus, the decimal 0.2 can be expressed as the proper fraction \( \frac{1}{5} \).
Since \( \frac{1}{5} \) is already in proper form (where the numerator is less than the denominator), it is not considered an improper fraction.