1. Please start Bellwork #6 Have out HW, red pen, book, pencil.
9-5-12
Please start Bellwork #6
Have out HW, red pen, book, pencil.

2. 1-6 Subtracting Integers p.29

3. Subtracting Integers When subtracting integers:
Change the subtraction sign to addition

4. Subtracting Integers When subtracting integers:
Change the subtraction sign to addition
Change the sign of ONLY the next number to its opposite.

5. Subtracting Integers When subtracting integers:
Change the subtraction sign to addition
Change the sign of ONLY the next number to its opposite.
Follow the rules for addition

6. EXAMPLE 14 – (-12) 14 – (-12) Change the operation to addition
14 – (-12) Change the next number to its opposite
Then follow the rules for addition. The signs are now the same, so add and give the common sign = 26.

7. EXAMPLE -28 – (-20) = -28 – (-20) = Change the operation to addition
-28 – (-20) = Change the next number to its opposite
Now the signs are different, so find the difference (subtract) and give the sign of the larger absolute value. 28 – 20 = 8.
-28 has a larger absolute value, it is negative so the answer to the problem is negative – (-20) = -8

8. TRY THIS
32 – (-3) =
-40 – 66 =
2 – 48 =

9. TRY THIS
32 – (-3) =
-40 – 66 =
2 – 48 = 35

10. TRY THIS
32 – (-3) =
-40 – 66 =
2 – 48 = 35
-106

11. TRY THIS
32 – (-3) =
-40 – 66 =
2 – 48 = 35
-106
-46

12. WORKSHEET ANSWERS 1) -12 2) 19 3) -17 4) -16 5) 2 6) 1 7) -17 8) -21
1) ) ) ) -16
5) 2 6) 1 7) ) -21
9) ) 82 11) ) 0
13) ) -3
15) ) -9
17) ) -10
19) ) -33

13. Agenda
p.31
#20-37

14. Please start Bellwork #8
9-7-11
Please start Bellwork #8
Have your HW, book, red pen, pencil on your desk.

15. Modeling Integers Yellow chips = positive numbers
Red chips = negative numbers
Use a mat to show each addend.
Write your answers with a picture and final answer.
Use zero pairs to remove chips from the mat. (one yellow and one red)

16. P.23 Example 1: 2 + (-5) = -3 =
7 + (-3) =
-2 + (-2) =

17. P.29 Example 1: -6 – (-2) = -4
-7 – (-2) =
-4 – (-3) =
-8 – (-5) =

18. Agenda
Workbook p.6
Chapter 1 Test next week

19. Please have your homework, book, and red pen on your desk.
9-7-10
Please have your homework, book, and red pen on your desk.
Start working on Bellwork #5 (write on own paper)

20. Agenda
PA#8:
Worksheet pp.5-6