1. The problem is to understand the nature of numbers like 0.5 and 1. 2. Numbers like 0.5 and 1 are real numbers. 0.5 is a decimal number representing a fraction, specifically $\frac{1}{2}$. 3. The number 1 is a whole number and also a real number. 4. Both numbers can be used in various mathematical operations such as addition, subtraction, multiplication, and division. 5. For example, $0.5 + 1 = 1.5$ and $1 - 0.5 = 0.5$. 6. These numbers are part of the number system that includes integers, fractions, decimals, and irrational numbers. 7. Understanding these numbers helps in basic arithmetic and more advanced math concepts.