Transcript Slide 1

Do Now 2/16/10
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Take out HW from last week.
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Copy HW in your planner.
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Punchline worksheets 11.6 & 11.7
Text p. 515, #4-52 multiples of 4
Quiz Sections 8.3 & 8.4 tomorrow
Chapter 8 Test (8.1-8.4) Friday
In your notebook, write the number one billion
and one million as a number. Then multiply the
two of them together. What is your answer?
Homework
Punchline worksheets 11.6 & 11.7
“What Did Professor Utterbunk Say When Asked:
Have You Ever Heard of the Planet Saturn?”
I’M NOT SURE BUT IT HAS A FAMILIAR
RING
“What Did People Say After Two Satellite Dishes
Got Married?”
THE WEDDING WAS DULL BUT THE
RECEPTION WAS GREAT
Objective
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SWBAT use scientific notation to represent
numbers.
Section 8.4, “Use Scientific Notation”
Scientific notation is a form to
write very large or very small
numbers.
Did you know that the population of the world is about 5,600,000,000?
Instead of writing this number with so many zeros, you can use the following
form:
5,600,000,000  5.6 1,000,000,000  5.6 10
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Section 8.4, “Scientific Notation”
A number is written in scientific notation
if it has the form:
n
c 10
where c is greater than or equal to 1 but less than 10.
Standard form
Product form
Scientific notation
3400  3.4 1000 3.4 103
**HINT: How many spots has the decimal point moved?
0.00032  3.2  0.0001 3.2 104
Write the number in scientific notation.
1)
2)
4,562,000  4.5621,000,000  4.562106
0.008201  8.201 0.001 8.201103
Write the number in decimal form.
3)
8.59105 
8.59100,000  859,000
4)
5.99104 
5.99  0.0001  0.000599
Multiplying with Scientific
Notation
To multiply two numbers that are written in scientific notation,
you can use the rule for multiplying powers with like bases.
Find the product of
(3.2 10 )
5
and
(4 10 )
6
(3.2 10 )  (4 10 )
5
6
(3.2  4 10 10 )
11
(12.8)  (10 )
5
6
1.2810
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Write the product
Reorder
Multiply
Write in scientific
notation
3
(2 10 )
6
(8 10 )
Evaluate
the quotient.
2 103
 6
8 10
Write the product
(0.2510 )
3
2.5 10
2
Write in scientific
notation
250
Decimal
form
Evaluate the product.
Find the product of
1
(0.310 ) and (0.6 10 )
4
4
1
(0.3 10 )  (0.6 10 ) Write the product
4
1
(0.3 0.6 10 10 ) Reorder
5
Multiply
(0.18)  (10 )
6
1.8 10
0.0000018
Write in scientific
notation
Decimal
form
(1.2 10 )
3
(1.6 10 )
4
Evaluate
the quotient.
1.2 104
 3
1.6 10
Write the product
(0.7510 )
7
7.5 10
6
Write in scientific
notation
7,500,000
Decimal
form
Homework
Text p. 515, #4-52 multiples of 4
Quiz Sections 8.3 & 8.4 tomorrow
Chapter 8 Test (8.1-8.4) Friday