The expression you provided is the product of two numbers: \( 2.5 \times (-0.5) \).

To solve it:
\[
2.5 \times (-0.5) = -1.25
\]

So, the result is \( -1.25 \).

Would you like any further explanation on this, or do you have any questions?

Here are five related questions to explore:
1. What is the product of \( 3.2 \times (-1.6) \)?
2. How do you multiply two negative numbers?
3. What is the effect of multiplying by a negative number on the result's sign?
4. How does multiplying decimals differ from multiplying whole numbers?
5. How do you divide two numbers with different signs?

**Tip:** When multiplying numbers with different signs, the result is always negative.

Learn how to solve the multiplication problem 2.5 × (-0.5), which involves multiplying a decimal by a negative number. The solution covers key concepts such as multiplying decimals and the rule for determining the sign of the product. Suitable for students in Grades 6-8.

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