To determine whether a common fraction is expressed as a decimal fraction by dividing the numerator by the denominator, let's break down the concept:
1. Common Fraction: A common fraction, also known as a simple, vulgar, or proper fraction, consists of two parts: the numerator (the top number) and the denominator (the bottom number).
2. Decimal Fraction: A decimal fraction is a way of representing fractions in a base 10 numeral system, including digits and a decimal point.
3. Conversion of Common Fraction to Decimal Fraction:
- To convert a common fraction to a decimal, you simply divide the numerator by the denominator.
- For example, to convert the fraction \(\frac{1}{2}\) to a decimal, you perform the division \(1 ÷ 2 = 0.5\).
From this explanation, it is clear that expressing a common fraction as a decimal fraction indeed involves dividing the numerator by the denominator.
Thus, the correct answer to the question is:
a. True
