1. L8-2 Notes: Adding Integers
Chapter 8
L8-2 Notes:
Adding Integers

2. Adding Integers with the Same Signs
To add integers with the same signs, add the numbers and keep the same sign.
(+2) =
2. (-2) + (-4) =

3. On Your Own… Add. Use counters if necessary. 1. +1 + (+4)
2. (-3) + (-4)
3. (-7) + (-4)

4. Add Integers with Different Signs
To add two integers with different signs, subtract the numbers and keep the sign of the bigger number.

5. Add Integers with Different Signs
Find 1 + (-5).
Find

6. On Your Own… Add. Use counters if necessary. 1. 7 + (-3) 2. 4 + (-4)
(-3)
(-4)

7. L8-3 Notes: Subtracting Integers
Chapter 8
L8-3 Notes:
Subtracting Integers

8. Subtracting Positive Integers
To subtract an integer, add its opposite.

9. Examples
Subtract.
1. 6 – 4 =
2. 5 – 2 =
3. 9 – 6 =

10. Subtracting Integers using Zero Pairs
Find -2 – 3.

11. Examples
Subtract.
– 3 =
– 5 =
– 5 =

12. Subtract Negative Integers
Find -5 – (-3).

13. Examples
Subtract.
– (-2) =
– (-1) =
– (-4) =