Transcript 3-4

3-4 Operating With Scientific Notation
If 4.46 x 1011 telephone calls were
placed by 1.35 x 108 American
telephone subscribers, what was the
average number of calls placed per
subscriber?
 Answer
is about 3,304 calls
3-4 Operating With Scientific Notation
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We are going to apply our knowledge that we
learned from yesterday. You will be given
some problems (1 at a time). With your group,
see if you can use scientific and standard
notation to answer the questions.
Write the problems down and then figure out
if your group can get a plan to solve them.
We will work the problems out on the board
after each group tries to solve them first.
3-4 Operating With Scientific Notation
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A web site averages 4.5 x 104 hits
per day. How many hits will it get in
3.6 x 102 days?
Answer is 16,200,000
3-4 Operating With Scientific Notation
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Two companies merged to form
a new company. One company
was worth $3.5 x 107. The other
was worth $7.8 x 108. What is
the combined value of the new
company?
Answer is $815,000,000
3-4 Operating With Scientific Notation
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In 2010, the world population
was about 6.7 x 109. The population of
United States was about 3.1 x 108
About how many more times is the
world’s population bigger than the U.S.?
Use 1 number!
Answer is 22 times
3-4 Operating With Scientific Notation
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In 2010, the population of India was
about 1.16 x 109. The population of
United States was about 3.1 x 108
How much more was the population of
India than the United States in 2010?
Answer is 850,000,000
3-4 Operating With Scientific Notation
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Rhode Island is the smallest state. It has
an approximate area of 1.5 x 103 square
miles. Alaska is the largest state. The area
of Alaska is 4.28 x 102 times greater than
the area of Rhode Island.
What is the approximate area of Alaska
in square miles?
Answer is 642,000
3-4 Operating With Scientific Notation
The GDP of China in 2009 was
about $8.7 x 1012. The GDP of Togo
in 2009 was about $5.5 x 109.
 How much greater was China’s GDP
than Togo’s GDP in 2009?
Answer is 8.6945 x 1012
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3-4 Operating With Scientific Notation
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(1) Product of Powers
(2) Quotient of Powers
(3) Power of Powers
(4) Negative Exponents
(5) Equivalent Expressions
(6) Scientific Notation