Download Chapter 2.4/2.6 Notes: Multiplying and Dividing Real Numbers

2.2 – 2.3 Quiz
Get out a blank sheet of paper and
a pencil and clear off your desk.
Lesson 2.4 and 2.6
Multiplying and Dividing Real Numbers
Goal: You will multiply and divide real numbers.
Rules for Multiplying Integers:
• Multiplying two numbers with the same sign will
ALWAYS equal a positive number.
ex. 4(8) = ___
ex. -9(-5) = ____
• Multiplying two numbers with different signs will
ALWAYS equal a negative number.
ex. 4(-9) = ____
ex. -10(50) = ____
Find the product.
 2(3)
 8(4)
6(12)
9 ( 5)
 8(6)
 7(30)
21(15)
You Try!
 3( 13)
Properties of Multiplication:
Property of Zero: The product of a number and 0 is 0.
 3(0)
0( 4)
0  (500)
67 0
Identity Property: The product of a number and 1 is
the same number.
7(1)
1(6)
4991
 96(1)
Rules for Dividing Integers:
Good News…
Same as multiplying rules!!
Dividing two numbers with the same sign will ALWAYS
equal a positive number.
ex. 28 ÷ 7 = ___
ex. -15 ÷ -3 = ___
Dividing two numbers with different signs will
ALWAYS equal a negative number.
ex. -16 ÷ 4 = ___
ex. 99 ÷ -11 = ___
Find the quotient.
8  (2)
 12  (6)
 72  (9)
130  (5)
12  (32)
You Try!
18  6
100  (5)
 24  (4)
6  (28)
Worksheet #1
Now lets multiply fractions!
1 3
 
2 4
1  3
 
6  5
1
 ( 8)
2
 2
 9 
 3
6  21 
  
7  24 
9
15
10
Now lets divide fractions!
1 3
 
2 4
6  6
  
7  14 
5  3
 
6  9
3 4

5 7
 3
9  
 4
9
 18
10
Worksheet #2
Vocabulary Words
CHAPTER 1
1) Variable
2) Algebraic Expression
3) Evaluating an Algebraic Expression
4) Power
5) Base
6) Exponent
CHAPTER 2
7) Equivalent Expression
8) Reciprocal
9) Distributive Property
10) Terms
11) Coefficient
12) Constant Term
13) Like Terms
14) Square Root
15) Perfect Square