1. How do you multiply integers?
2.1 Multiplying Integers
How do you multiply integers?

2. Notes Same sign is ALWAYS positive Opposite signs are ALWAYS negative.
(1)(1) = 1
(-1)(-1) = 1
Opposite signs are ALWAYS negative.
(1)(-1) = -1
(-1)(1) = -1

3. Multiplying integers using a number line
Page 37 A B
Reflect

4. Multiplying (13)(-3) Step 1: Determine the sign of the product
Opposite signs means negative product
Step 2: Find the absolute values of the numbers and multiply them
(13)(3) = 39
Step 3: Assign the correct sign to the product
(13)(-3) = -39
(-5)(-8)
(-10)(0)

5. Practice Your Turn pg 39 #4-9 Independent Practice pg 41-42 #19-27
Guided Practice pg 40 #1-17
Multiplications worksheet
2.1 Quiz

6. How do you divide integers?
2.2 Dividing Integers
How do you divide integers?

7. Notes Same sign is ALWAYS positive Opposite signs are ALWAYS negative.
(1)(1) = 1
(-1)(-1) = 1
Opposite signs are ALWAYS negative.
(1)(-1) = -1
(-1)(1) = -1

8. Explore Activity
Page 43 - together

9. Dividing 24÷(-3) Step 1: Determine the sign of the quotient
Opposite signs mean negative quotient
Step 2: Divide
24 ÷ (-3) = -8
-6÷ (-2)
0 ÷ (-9)

10. Practice Your Turn pg 43 #2-4 Independent Practice pg 47-48 #20-27
Guided Practice pg 46 #1-18
Division worksheet
2.2 Quiz

11. 2.3 Applying Integer Operations
How can you use integer operations to solve real-world problems?
~Using Order of Operations

12. Example 1
Hannah made four withdrawals of $20 from her checking account. She also wrote a check for $215. By how much did the amount in her checking account change?
Analyze
Find the change. Withdrawals and checks are negative amounts
Formulate
-20 + (-20) + (-20) +(-20) = 4(-20)
Add -215 for the check
4(-20) + (-215)
Solve
-80 – 215
-295
Answer
The amount decreased by $295

13. Try It
Reggie lost 3 spaceships in level 3 of a video game. He lost 30 points for each spaceship. When he completed level 3, he earned a bonus of 200 points. By how much did his score change?
3(-30) + 200
110
Reggie’s points increased by 110.

14. Example 2 -72 ÷ 3 + (-15) =-24 + (-15) =-39 Try it (-12) ÷ 6 + 2
40 ÷ (-5) + 30
-87 ÷ (-3) – 9
-39 ÷

15. Example 3
Jill and Tony play a board game in which they move counters along a board. Jill moves her counter back 3 spaces four times, and then moves her counter forward 6 spaces. Tony moves his counter back 2 spaces three times, and then moves his player forward 3 spaces one time. Find each player’s overall change in position. Who moved farther?
Step 1: Find each player’s overall change
Jill: 4(-3) + 6
= -12+6
= 6
Tony: 3(-2) + 3 =
= -3
Step 2: Compare the numbers of spaces moved
|-6| |-3| which one is larger
Jill moves farther back than Tony

16. Practice Independent Practice pg 53-54 #16-26
Guided Practice pg 52 #1-14
2.3 Worksheet
2.3 Quiz
Overall Integer TEST