1. ADDING REAL NUMBERS
Section 2.2

2. Algebra tiles can be used to add or subtract integers.
Remember integers are .

3. Example 1: = = = = Use algebra tiles to represent

4. Neutral pairs have a value of _____.
zero =

5. A. Use algebra tiles to represent
Example 2:
A. Use algebra tiles to represent
and then cross out any neutral pairs. +
= =

6. = = B. Use algebra tiles to represent
and then cross out any neutral pairs. = =

7. C. Use algebra tiles to represent
and then cross out any neutral pairs.

8. = D. Use algebra tiles to represent
and then cross out any neutral pairs. =

9. 1 3 2 4 5 = E. Use algebra tiles to represent
and then cross out any neutral pairs. 1 3 2 4 = 5
There are no
neutral pairs

10. = F. Use algebra tiles to represent
and then cross out any neutral pairs. =
There are no
neutral pairs

11. Rules For Adding Two Signed Numbers:
A. Signs are the same –
______________________________________
2.______________________________________
Add the numbers
Take the given sign
B. Signs are the different –
______________________________________
2.______________________________________
Subtract the numbers
Take the sign of the larger number

12. Example 3: Find each sum. A. Signs are different Signs are the sameB. C. A.
Signs are
different
Signs are
the same
Signs are
different
Try these… Find each sum. C. B. A.

13. Example 4: Find each sum. B. A.
1.2 C. D.
-12.3

14. Try these… Find each sum.B. A. C. D.