The expression \( 1 - (-8) \) can be simplified by recognizing that subtracting a negative number is the same as adding the positive version of that number. So:

\[
1 - (-8) = 1 + 8 = 9
\]

The simplified result is \( 9 \).

Would you like more details or have any questions?

Here are 5 related questions:
1. What is the result of \( 5 - (-3) \)?
2. How do you simplify \( -4 - (-6) \)?
3. What is \( 2 - (-10) \) equal to?
4. What is the difference between \( -7 \) and \( -12 \)?
5. How do you handle subtraction with multiple negative signs?

**Tip:** When subtracting a negative number, always change the subtraction into addition!

Learn how to simplify the expression 1 - (-8) by understanding the rule of subtracting negative numbers. This problem covers basic arithmetic concepts, focusing on the formula a - (-b) = a + b, suitable for students in Grades 5-6.

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