1. HERE’S A PREVIEW…

3. Subtracting Integers

4. Objective:
I can use properties of operations to subtract rational numbers (integers).
(7.NS.A.1d)

5. Vocabulary:
-Integers: Whole numbers and their opposites.

6. What is an integer?
Characteristics of an integer: Examples:

7. HERE WE GO…

8. (-6) – (-3)
NUMBER LINE:

9. (-5) – 1
NUMBER LINE:

10. 1 - 5
NUMBER LINE:

11. (-2) – 1
NUMBER LINE:

12. The Rules: The same as adding its opposite!
DO NOT CHANGE THE FIRST INTEGER! (KEEP)
Change the subtraction sign to a plus sign. (FLIP)
Change the sign of the next integer to its opposite. (CHANGE)
Follow the addition rule.

13. WAIT… WHAT’S THE ADDITION RULES?!

14. K-F-C Keep----Flip----Change **Then follow addition rule**
-7 – – (-3) – (-3)

15. Example 1
(3) – (-2) =

16. Example 2
(-4) – (-8) =

17. Example 3
(-9) – (-6) =

18. Example 4
(-7) – (7) =

19. Example 5
(-1) – (0) =

20. Example 6
(10) – (-5) =

21. Quick Challenge!
(8) – (-2) =
(-4) – (5)=
(3) – (9)=
(-6) – (8)=
(-7) – (-3)=

22. SUBTRACTING INTEGERS CARD GAME

23. RULES & DIRECTIONS RED—NEGATIVE K-13 Q-12 J-11 A-1 BLACK—POSITIVE
Deal the deck until you and your partner have the same number of cards.
Each player plays (places down) one card at a time.
Whoever answers the “card problem” first and is correct wins those cards.
Keep playing until one player has ALL the cards. 

24. EXIT TICKET
Evaluate.
(-1) – (-9) =
12 – (-5) =
(-7) – 5 =
10 – (-2) =

25. Show work by drawing counter chips.
CLASSWORK
PG. 94
NUM. 1-8
Show work by drawing counter chips.

26. NUMBER TALK