1. Integer Rules Review

2. Warm-Up: 9/9
1. Solve: If yesterday it was -4° and today it is 23°, how much warmer is it today than yesterday?

3. Adding and Subtracting Integers Review
Today’s Agenda
Warm-Up
Adding and Subtracting Integers Review
Multiplying and Dividing Integer Rules
Integer Foldable
Wrap-Up
Homework

4. Adding Integers Review
How do we add integers with the same sign?
Add and keep the sign
How do we add integers with different signs?
Subtract and keep the sign of the larger.

5. Let’s Sing a Song!
Addition Rule: Sung to the tune of “Row, row, row, your boat” Same signs add and keep, different signs subtract, keep the sign of the higher number, then it will be exact!

6. -32 + (-12) 30 + (-25) -19 + 16 (-18) + (-15) -44 5 -3 -33
Let’s Try Some……
-32 + (-12)
30 + (-25)
(-18) + (-15)
-44 5 -3
-33

7. Integers and Money
Remember…..
A negative number is like losing money and a positive number is like winning money

8. **This means you are still down $8!**
Integers and Money
For example,
is the same as….
A loss of $16
A gain of $8
**This means you are still down $8!**

9. Subtracting Integers Review
How do we change a subtraction problem into an addition problem?
Same Change Opposite
(-4) – (-5) = (-4) + 5
5 – 10 = 5 + (-10)

10. This is also like winning and losing money. 5 – 10
Integers and Money
This is also like winning and losing money.
5 – 10
A win of $5 and a loss of $10
This means you are in the hole $5, or -5

11. Let’s Try Some
(-23) – 10
18 – (-5)
(-15) – (-8)
20 – 30
-33 23 -7
-10

12. Multiplication and Division of Integers

13. Here’s a way I can Remember!
To remember whether your answer will be positive or negative when MULTIPLYING or DIVIDING, we’ll use:
Mr. Multiplivision

14. = -15 When multiplying Integers, cover the Two signs you are using
Choral Response
What sign is left
uncovered?
Ex.: 5 (-3)
Negative, -
That is the sign of
The answer
= -15

15. Practice …
(-10)(3) =
21  -5 =
-13  -6 =

16. Division
Good News:
It’s not any different!
Ex.: -48  (-4)
= + 12

17. Reminder:
Equal means it works both ways! 

18. SOLVE:
(4)(-7)  (-2)
Turn to your neighbor: Person on the left: what’s good about this
Right: What’s the bad consequence of this
Response: They can copy notes, vocab, etc. while holding another conversation, thinking about the weekend, etc.
Cornell notes: questions, summaries
Frayer model- student worded definition
Good News + It”s easy to get their attention with ANY thing different

19. (4)(-7)  (-2)
First, (4)(-7)
= - 28
Finish it! (-28)(-2)
Answer: 14

20. Integer Foldable
er-foldable.html

21. Put your thinking cap on!
A, B, C, D, and E correspond to points on a thermometer. Use these clues to plot the points: *B and D are negative
*D is warmer than C
*B is warmer than C
*E and D are the same distance from zero
*E is colder than A
Compose your own thermometer problem and include your answer.

22. Homework
Handout: Problems 1-10