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Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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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
Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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Do Now: Which is larger?
32,150,000 or 3.2 x 107
Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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April 06, 2016
Homework Answers pg 56 # 1 - 10
Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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Homework Answers pg 56 # 1 - 10
Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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Homework Answers pg 56 # 1 - 10
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Homework Answers pg 56 # 1 - 10
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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)
Module 8.1 Lesson 8 Multiplying and Dividing.notebook
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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 10bnm
= 10a-bx
Example 2:6.2 x 106
3.1 x 103
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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.
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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
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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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