1. Examples
7 = 7
10 = 10
-100 =
100
5 - 8 =
-3= 3

2. Bellringer
Solve:
– (4) + 2 – 18 + (-1) =

3. Bellringer
Solve:
– (4) + 2 – 18 + (-1) =
Answer:

4. Go over homework

5. Ch. 1-4 Multiplying and Dividing Integers
Big Rock Steps for Multiplying & Dividing Integers
1. Count negative signs
2. If even – answer is positive
3. If odd – answer is negative
Multiplying & Dividing Integers:
-The product of two integers with the same sign is positive.
Example: 2 * 7 = * -7 = 14
-The product of two integers with different signs is negative.
Example: 2 * -7 = * 7 = -14
-The quotient of two integers with the same sign in positive.
Example: 8/2 = 4 -8/-2 = 4
-The quotient of two integers with different signs is negative.
Example: -8/2 = -4 8/-2 = -4

6. Example 1: Multiply the following integers.
a.) 3 * -6 b.) -4 * -5 c.) -2 * 3 * -4
-18 0- 20 E+ 24 E+
Example 2: Divide the following integers.
a.) -18/-2 b.) 12/-6 c.) -24/2 9 E+ -2 o-
-12 O-
Example 3: Evaluate each algebraic expression below. Use order of operations!
p = 4 t = -2 r = -3
a.) pt + (p – t) * r b.) 2p + pr – t

7. Example 3: Evaluate each algebraic expression below
Example 3: Evaluate each algebraic expression below. Use order of operations!
p = 4 t = -2 r = -3
a.) pt + (p – t) * r b.) 2p + pr – t
4(-2) + (4 –(-2)) * -3
2(4) + 4(-3) – (-2)
4(-2) + 6 * -3 =
8 + 4(-3) – (-2) =
* -3 =
– (-2) = =
-4 – (-2) = =
-26 -2

8. You try one: x = -9 y = -5 z = -3 2x + xy ÷z – 3
2(-9) + (-9)(-5) /
-18 + (-9)(-5) / /

9. -36 You try one: x = -9 y = -5 z = -3 2x + xy ÷z – 3
2(-9) + (-9)(-5) /
-18 + (-9)(-5) / /
-36

10. 23 When a negative is in front of a negative.
When a negative is in front of a negative with no numbers in between times.
Ex: 2(9) + -(-5) =
18 + -(-5) = = 23

11. Homework Textbook pg 22 #10-42 even Show steps Even positive
Odd negative
E O
+ -

12. -25 Evaluate Expressions -n + 5n + 3 when n = -7 -(-7) + 5(-7) + 3
-(-7) + 5(-7) + 3
-25

13. Evaluate Expressions
6n when n= -7
-3x + x – 2 when x = -4
-39 6

14. Evaluate Expressions with exponents
x4 when x = -2 16