Fill in the blanks.
The value of a variable keeps _____________.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks us to fill in the blank regarding the nature of a variable in mathematics.

2. **Defining a Variable**: A variable is a symbol used to represent a number that can change. It is often denoted by letters such as x, y, or z.

3. **Nature of Variables**: The key characteristic of a variable is that it does not have a fixed value. Instead, it can take on different values depending on the situation or equation.

4. **Filling in the Blank**: Given that the value of a variable can change, we can conclude that the appropriate word to fill in the blank is "changeable".

5. **Final Answer**: The complete statement is: "The value of a variable keeps **changeable**."

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