1. Describe the ordered pairs in:
Do Now
Describe the ordered pairs in:
Quadrant I
Quadrant II
Quadrant III
Quadrant IV

2. Lessons 4 and 5 Objective: Adding and Subtracting Integers
Chapter 3
Lessons 4 and 5
Objective:
Adding and Subtracting Integers

3. Adding Integers Rules If adding by the SAME sign:
ADD and keep the sign the same.
If adding by DIFFERENT signs
SUBTRACT and take the sign of the larger number.

4. Here are a few examples:
(-17)
same sign
Add 43
Keep the sign the same
-43

5. Here are a few examples:
(-16)
same sign
Add 30
Keep the sign the same
-30

6. Here are a few examples:
same sign
Add 61
Keep the sign the same

7. Here are a few examples:
(-49)
same sign
Add 84
Keep the sign the same
-84

8. Here are a few examples:
7 + (-1)
Different sign
subtract 6
Take the sign of the larger # +6

9. Here are a few examples:
-8 + 4
Different sign
subtract 4
Take the sign of the larger # -4

10. Here are a few examples:
10 + (-12)
Different sign
subtract 2
Take the sign of the larger # -2

11. Here are a few examples:
Different sign
subtract 5
Take the sign of the larger # +5

12. You try these!!
-6 + (-8)
-14 7
7 + (-11) -4
9 + (-9)

13. On your own
Page 123 in your textbook
Do numbers odd

14. Now lets try subtracting integers!

15. Subtracting Integers Rules KEEP CHANGE CHANGE
Keep the first number the same
Change the subtraction sign to addition
Change the second number’s sign
2. Follow the rules of adding integers

16. Keep the sign of the larger #: -5
Here are a few examples!
8 – 13
Keep Change Change
8 + (-13)
Different signs
Subtract: 5
Keep the sign of the larger #: -5

17. Keep the sign of the larger #: -17
Here are a few examples!
-10 – 7
Keep Change Change
-10 + (-7)
Same signs
Add: 17
Keep the sign of the larger #: -17

18. Keep the sign of the larger #: +3
Here are a few examples!
1 – (-2)
Keep Change Change
1+ (+2)
Same signs
Add: 3
Keep the sign of the larger #: +3

19. Keep the sign of the larger #: -3
Here are a few examples!
-10 – (-7)
Keep Change Change
-10 + (+7)
Different signs
Subtract: 3
Keep the sign of the larger #: -3

20. You try a few!
4 – (-12)
+16
-15 – (-5)
-10
18 – (-6)
+24

21. Your turn in your book
Page 130
Numbers 13 – 43 odd

22. Quiz on these two lessons
Homework
Page 123 numbers 12 – 26 even
Page 130 numbers even
Quiz on these two lessons
Wednesday!!