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The question asks to express \(-0.8\) as a fraction.

To convert \(-0.8\) to a fraction:
1. Recognize that \(-0.8\) can be written as \(-\frac{8}{10}\).
2. Simplify the fraction \(\frac{8}{10}\) by dividing both the numerator and denominator by their greatest common divisor, which is 2. 
   \[
   \frac{8}{10} = \frac{4}{5}
   \]
Thus, \(-0.8\) as a fraction is \(-\frac{4}{5}\).

The correct option is the second one: \(-\frac{4}{5}\), not the one currently selected, which is \(-\frac{4}{25}\).

Would you like more details on this or have any other questions?

Here are some related questions:
1. How do you convert decimals to fractions in general?
2. What is the method to simplify fractions?
3. Can you explain how to identify the greatest common divisor?
4. How do you convert repeating decimals into fractions?
5. How do you add and subtract fractions with different denominators?

**Tip:** Always simplify fractions to their lowest terms by dividing both the numerator and the denominator by their greatest common divisor.

Learn how to convert -0.8 to a fraction by recognizing it as -4/5 after simplification. This step-by-step solution covers decimal to fraction conversion and using the greatest common divisor (GCD) to simplify the fraction. Suitable for Grades 5-7.

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