1. Stand Quietly

2. Lesson 1.4/1.5 Multiplying and Dividing Integers
Students will be able to multiply and divide integers

3. Warm-Up #22 (10/11/16) -30 –(-13) + 34 45 – (-9) + |13|
Use Order of Operations
-30 –(-13) + 34
45 – (-9) + |13|
12 – |3-1| + 3 – (-4)

4. Textbook Big Ideas Page 26 #8-17 ALL
Homework (10/11/16)
Textbook Big Ideas Page 26 #8-17 ALL

5. Homework Solutions 1. -5 2. 13 3. -19 4. -1 5. 27 6. -24 7. -15 8. -4
7. -15
8. -4
9. -8
10. 3
meters
12. -$14 (lost profit)

6. Warm-Up #23 (10/12/16) 4 −6÷2 −4∙2 + −12 −2 −7−−8 −|3+4|
Use Order of Operations
4 −6÷2
−4∙2 + −12 −2
−7−−8 −|3+4|

7. Homework (10/12/2016)
Chapter 1 Study Guide packet Page 3

8. Homework Solutions

9. Multiplying and Dividing Integers

10. MULTIPLYING AND DIVIDING TWO INTEGERS
Course 3
Multiplying and Dividing Integers
Insert Lesson Title Here
MULTIPLYING AND DIVIDING TWO INTEGERS
If the signs are the same, the sign of the answer is positive.
If the signs are different, the sign of the answer is negative.

11. Additional Example 1: Multiplying and Dividing Integers
Multiply or divide.
A. –6(4)
Signs are different.
Answer is negative.
= –24
B. –8(–5)
Signs are the same.
Answer is positive.
= 40

12. Additional Example 1: Multiplying and Dividing Integers
Multiply or divide.
–18 2 C.
Signs are different.
= –9
Answer is negative.
–25 –5 D.
Signs are the same.
= 5
Answer is positive.

13. Check It Out: Example 1
Multiply or divide.
A. 5(–2)
Signs are different.
= –10
Answer is negative.
B. –3(–2)
Signs are the same.
Answer is positive.
= 6

14. Check It Out: Example 1
Multiply or divide.
–24 3 C.
Signs are different.
= –8
Answer is negative.
–12 –2 D.
Signs are the same.
= 6
Answer is positive.

15. Order of Operations
1. Parentheses
2. Exponents
3. Multiply and divide from left to right.
4. Add and subtract from left to right.
Remember!

16. Additional Example 2: Using the Order of Operations with Integers
Simplify.
A. 3(–6 – 12)
Subtract inside the parentheses.
= 3(–18)
Think: The signs are different.
= –54
The answer is negative.
B. –5(–5 + 2)
Subtract inside the parentheses.
= –5(–3)
Think: The signs are the same.
= 15
The answer is positive.

17. Additional Example 2: Using the Order of Operations with Integers
Simplify.
C. –2(14 – 5)
Subtract inside the parentheses.
= –2(9)
Think: The signs are different.
= –18
The answer is negative.

18. Check It Out: Example 2
Simplify.
A. 2(1 – 8)
Subtract inside the parentheses.
= 2(–7)
Think: The signs are different.
= –14
The answer is negative.
B. 4(–3 – 8)
Subtract inside the parentheses.
= 4(–11)
Think: The signs are different.
= –44
The answer is negative.

19. Check It Out: Example 2
Simplify.
C. –3(6 – 9)
Subtract inside the parentheses.
= –3(–3)
Think: The signs are the same.
= 9
The answer is positive.

20. Additional Example 3: Sports Application
A golfer plays 5 holes. On 3 holes, he has a gain of 4 strokes each. On 2 holes, he has a loss of 4 strokes each. Each gain in strokes can be represented by a positive integer, and each loss can be represented by a negative integer. Find the total net change in strokes.
3(4) + 2(–4)
Add the losses to the gains.
= 12 + (–8)
Multiply.
= 4
Add.
The golfer changed by a total gain of 4 strokes.

21. Check It Out: Example 3
A golfer plays 9 holes. On 3 holes, he has a gain of 3 strokes each. On 4 holes, he has a loss of 3 strokes each. Each gain in strokes can be represented by a positive integer, and each loss can be represented by a negative integer. Find the total net change in strokes.
3(3) + 4(–3)
Add the losses to the gains.
= 9 + (–12)
Multiply.
= -3
Add.
The golfer changed by a total loss of 3 strokes.

22. Insert Lesson Title Here
Lesson Quiz: Part I
Multiply or Divide.
1. –8(4)
–32 2.
–12(5)
–10 6
Simplify.
3. –2(13 – 4)
– 18
4. 6(-5 – 3)
– 48

23. Insert Lesson Title Here
Lesson Quiz: Part II
5. Evin completes 11 transactions in his bank account. In 6 transactions, he withdraws $10. in 5 transaction, he deposits $20. Find the total net change in dollars.
$40