1. 2 4 −4 −2 −5 −3 −1 1 3 5

2. 2 4 −4 −2 −5 −3 −1 1 3 5

3. Example 1 Add the following integers on number lines. a. 1 + 4 2 4 5−4 −2 2 4 5

4. Example 1 Add the following integers on number lines. b. −1 + (−4) 2−6 −5 −4 −2 2

5. Adding Integers with Like Signs
Add the absolute values of the addends.
Use the sign of the addends for the sum.

6. Example 2
Add.
a. −3 + (−4) = −7

7. Example 2
Add.
b. −4 + (−6) + (−2) =
−12

8. Example 3
Add the following integers on number lines.
a. −3 + 7

9. Example 3
Add the following integers on number lines.
b (−6)

10. Adding Integers with Unlike Signs
Find the difference of the absolute values of the addends.
Use the sign of the addend with the greater absolute value for the sum.

11. Example 4
Add.
a. −9 + 3 = −6

12. Example 4
Add.
b. − = 8

13. Example 4
Add.
c. 8 + (−6) = 2

14. Exercise
Solve.
7 + y = −7
y = −14

15. Exercise
Solve.
−15 + z + (−8) = −8
z = 15

16. Exercise
Solve.
−8 = −4 + x
x = −4

17. Exercise
Solve.
a + |−23 + 6| = −32
a = −49

18. Exercise
Solve.
|−12 + y| + (−4) = 17
y = −9 or 33