February 28, 2014
Transcript of February 28, 2014
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Today:Warm-Up: (4)
Computing Problems written in Scientific Notation
Class Notes
28
Feb
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Notes:
Progress Reports Next Thursday Extra Credit Due Today
Reminder for all: Khan Academy due Wednesday
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Warm Up:
1. 4 Gigabytes
2. 21.5 Megawatts
Write each measurement in both Scientific Notation & Standard Form
3. 186,000 miles/second
21,500,0002.15 x 107
Write in Scientific Notation
4. 171,000,000,000 emails sent each day world wide.
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Practice Problem Section of Notebook, Please
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Before we begin, a mathematical truth to consider. (2 x 5)( 4 x 5) = (2 x 4) (5 x 5)
Another way to state this is: (2 x 5)( 4 x 5) = (2 x 4) (51 x 51)
Which is, of course, (2 x 4) (52)
We used both the commutative and associative properties to rearrange the original problem. As mentioned before, take what you already know, find similarities, and proceed.
Let's look at specific problems to solve:
Multiplying & Dividing Monomials Written in Scientific Notation
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Practice Problems:
Write 14.45 in scientific notation:
= 1.445 x (101 x 108)
Next, Use the associative property to regroup.
Use the associative & commutative properties to regroup.
= (1.445 x 101)
x 108
= 1.445 x 109
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Practice Problems:
On Your Own: Dividing Monomials Written in Scientific
NotationAn easy one to begin:
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SCIENTIFIC NOTATION
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SCIENTIFIC NOTATION
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SCIENTIFIC NOTATION
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Class Work