The result of \( 9 - 9 \) is:

\[
9 - 9 = 0
\]

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Here are 5 related questions:
1. What is \( 9 + 9 \)?
2. What is \( 9 \times 9 \)?
3. What is \( 9 \div 9 \)?
4. What is \( 9 - 3 \)?
5. What is \( 9^2 \) (9 squared)?

**Tip**: Subtracting a number from itself always results in zero.

Learn how to solve the basic subtraction problem 9 - 9. This example demonstrates the identity property of subtraction, where subtracting a number from itself always equals zero. Suitable for students in Grades 1-3.

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