Dividing Integers

1
LESSON 2-5 Warm Up

2
LESSON 2-5 Warm Up

3
Dividing Integers (2-5)

• What are the rules for dividing positive and
  negative numbers?

• NOTE You can use same rules for multiplying
  positives and negatives.
• Rule Dividing Numbers With the Same Sign The
  quotient of two positive or two negative numbers
  is positive.
• Examples 6 3 2
  -6 (-3) 2
• Rule Multiplying Numbers With Different Signs
  The quotient of two numbers with opposite signs
  (a number divided by a number or a -
  number divided by a number) is negative.
• Examples -6 3 -2
  6 -3 -2

4
Dividing Integers
LESSON 2-5
Additional Examples
Simplify each expression.
a. 70 (5)
b. 54 (9)
5
Dividing Integers
LESSON 2-5
Additional Examples
Evaluate 4z2 for x -4, y 2, and z
4.
2 64 Divide and multiply.
62 Subtract.
6
Dividing Integers
LESSON 2-5
Additional Examples
p r
Evaluate for p and r .
2 Simplify.
7
Dividing Integers
LESSON 2-5
Additional Examples
In a 2-hour period, the wind speed decreased
from 28 mph to 18 mph. If the speed decreased the
same amount each hour, how much did the wind
speed change each hour?
10 2 r
The wind speed changed at an average rate of 5
mph each hour.
8
Dividing Integers
LESSON 2-5
Lesson Quiz
Find each quotient. 1. 27 (3) 2. 30
(6)
9
5