1. Adding Integers

2. Zero Pair 1 + -1 = 0

3. Why it works… __________ Property says you can add or subtract zero without changing the value of an expression. Identity

4. -4 + 2

5. 8 + (-7)

6. 4 + 2

7. -4 + (-2)

8. 3 + -3

9. For homework, Kyle was adding integers. He looked at a computation and said, “I know the sign of the sum will be negative.” Based on Kyle’s statement, what do you know about the problem?

10. Annie added three integers and got a sum of zero. What might the three integers have been?

11. Let’s Think… What is ALWAYS true?

12. Let’s Think… What rule can we make for adding integers?

13. 2 Most Important Rules to Remember 1.Same sign- Add, keep sign 2.Different sign- Subtract, keep sign of # with greater absolute value