Yes, 0.5 is a rational number.
To understand why, we need to recall the definition of a rational number. A rational number is any number that can be expressed as the quotient or fraction p/q, where p and q are integers and q is not zero.
In the case of 0.5, we can express it as 1/2. Here, 1 is the integer numerator (p), and 2 is the integer denominator (q), which is not zero. This means that 0.5 meets the criteria for being a rational number.
Additionally, all terminating decimals can be converted into fractions. Hence, since 0.5 is a terminating decimal, it confirms that it is indeed a rational number.