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# February 28, 2014

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### February 28, 2014

1. 1. February 28 Today: Warm-Up: (4) Computing Problems written in Scientific Notation Class Notes
2. 2. Notes:  Progress Reports Next Thursday  Extra Credit Due Today  Reminder for all: Khan Academy due Wednesday
3. 3. Warm Up: Write each measurement in both Scientific Notation & Standard Form 1. 4 Gigabytes 2. 21.5 Megawatts 21,500,000 2.15 x 107 Write in Scientific Notation 3. 186,000 miles/second 4. 171,000,000,000 emails sent each day world wide.
4. 4. Practice Problem Section of Notebook, Please
5. 5. Multiplying & Dividing Monomials Written in Scientific Notation 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: Which is, of course, 1 1 (2 x 5)( 4 x 5) = (2 x 4) (5 x 5 ) (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:
6. 6. Practice Problems: Use the associative & commutative properties to regroup. Write 14.45 in scientific notation: = (1.445 x 101) x 108 Next, Use the associative property to regroup. = 1.445 x (101 x 108) = 1.445 x 109
7. 7. Practice Problems: On Your Own: Dividing Monomials Written in Scientific Notation An easy one to begin:
8. 8. SCIENTIFIC NOTATION
9. 9. SCIENTIFIC NOTATION
10. 10. SCIENTIFIC NOTATION
11. 11. Class Work