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CC 2.9 - Scientific Notation CJ.notebook1
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Our Target:
By the end of today's lesson, you should be able to...
• Use Scientific Notation • Convert between standard and
scientific notations
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November 02, 2015
Math Message 2.9
•
In lesson 24, you multiplied numbers by
powers of 10. Review your answers to
Problems 13 on journal page 56. Then find
the following products:
5 * 10 4 * 10 9 * 10 3 * 10 3 6
9 6
CC 2.9 Scientific Notation CJ.notebook
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Positive Powers of 10
Negative Powers of 10
Can you think of a number that is
not positive or negative?????
Why would the zero power of any
number equal 1?
CC 2.9 Scientific Notation CJ.notebook
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10
Not written in proper
scientific notation
CC 2.9 Scientific Notation CJ.notebook
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7.82 x 10
3.04 x 10
5 x 10
6.2103 x 10
The exponent tells you
how many decimal places
you need to move.
decimal notationscientific notation
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123,000,000,000
45,000,000
67,800,000,000,000
9,000
Move the star to count the
number of decimal places.
The amount of moves will
give you the exponent value.
decimal notation scientific notation
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November 02, 2015
An example of a really big number.
Please write it in scientific notation.
As the planets orbit the sun, the closest Pluto gets to Earth
is approximately 2,700,000,000 miles.
CC 2.9 Scientific Notation CJ.notebook
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0.000000034
0.0000000005609
0.000000000064
0.007 Move the star to count the
number of decimal places.
The amount of moves will
give you the exponent value.
decimal notation scientific notation
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4.8 x 10
1.2 x 10
9 x 10
7.1034 x 10
The exponent tells you
how many decimal places
you need to move.
decimal notationscientific notation
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November 02, 2015
An example of a really small number.
Please write it in scientific notation.
Human fingernails grow at a rate of about 0.00286 inches
per day.
CC 2.9 Scientific Notation CJ.notebook
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November 02, 2015
An example of a really small number.
Please write it in scientific notation.
The thickness of a red blood cell is approximately 0.0003125
of an inch.
CC 2.9 Scientific Notation CJ.notebook
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November 02, 2015
Scientific Notation Toss Players - Materials: Two 6-sided die One
whiteboard for each player Goal: Make the largest numbers possible
written in scientific notation
Directions: 1. Each player rolls the dice 3 times and writes each
result in scientific notation.
2. Players convert their numbers from scientific notation to
standard notation. Then they order the numbers from largest to
smallest.
3. Players compare lists. The player who has the largest number
wins. In case of a tie, they roll a fourth time.
Ex. Ann rolls: 2 and 4 5 and 3 1 and 6
Ann writes: 2 * 10 3 * 10 1 * 10 20,000 300,000 1,000,000
Ann orders: 1,000,000 300,000 20,000
Whoever has the largest of the numbers wins.