notes

1. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Module 8.1 Lesson 8
Estimating Quantities
HW
Do Now:
Which is larger?
32,150,000 or 3.2 x 107
Module 2 Packet
due Friday 4/8

2. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Do Now:
Which is larger?
32,150,000 or 3.2 x 107

3. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Homework Answers pg 56 # 1 - 10

4. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Homework Answers pg 56 # 1 - 10

5. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Homework Answers pg 56 # 1 - 10

6. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Homework Answers pg 56 # 1 - 10

7. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
To Multiply:
To multiply two numbers expressed in scientific
notation, simply multiply the numbers out front and
add the exponents.
Generically speaking, this process is expressed as:
(n x 10a
) • (m x 10b
) = (n · m) x 10a+b
Example 1: (1.2 x 104
) • (3.4 x 106
)

8. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
To Divide:
To divide two numbers expressed in scientific
notation, simply divide the numbers out front and
subtract the exponents.
Generically speaking, this process is expressed as:
n x
10a
m x
10b
n
m
= 10a-b
x
Example 2:
6.2 x 106
3.1 x 103

9. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
If you have to move the decimal to the left, ____________ the power.
ex) 337.4 x 108
=
If you have to move the decimal to the right, ___________ the power.
ex) .056 x 105
=
CAUTION!!!!
Sometimes the answer is no longer in Scientific Notation
after multiplying or dividing.

10. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Example 3:
Example 4:
Watch out for those negative exponents!!!
3.66 x 10-5
2.0 x 10-3
(8.2 x 106
)(5.0 x 10-2
)
2.0 x 102

11. Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
p53
1. (2.4x105
)(1.3x103
)
2. (2.4x10102
)(1.3x1042
)
3) 8.37x1030
2.7x1021
4. 3.6x1075
9x1055
5a. (3.4x103
)(5.3x106
)
5b. (4.0x10-5
)(5.2x107
)

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pg 55

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pg 55

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pg 56

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pg 56

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