1. Aim: Why do we use Scientific notation in Science?
Do Now:
- Take out your Safety Labs
- Take out your signed contracts
- In your notebooks, explain why scientists use scientific notation to represent numbers they calculate rather then writing out the entire number.

2. Scientific notation is used to write numbers in a short-hand form
Scientific notation is used to write numbers in a short-hand form. This technique makes really large or really small numbers easier to read and write.
Ex:
9,600,000 = 9.6 x 10 6
= 4.9 x 10 -4

3. 9 600 000 = 9.6 x 10 6 Rules for writing in Scientific Notation
Step 1 Position the decimal point to get a number between 1 and 10
Step 2 Count the number of places the decimal point was moved to get the number between 1 and 10. Where did it start originally?
Step 3 Write the number as a product between 1 and 10 to a power of 10 =
9.6 x 10 6

4. Closure:
Take a “Writing numbers in Scientific Notation” worksheet from the back.
Working with the person sitting next to you, work on the practice problems on the front of the worksheet.

5. 4.6x ) 4.605X106 3) 3.3X104
4) 9.632X103 5) 8.0X ) 3.0X10-2
7) 1.458X106 8)1.4X ) 5.7X103
10) 6.57x101 11) 5.45x )2.245x107
13) 8.03x ) 6.783x102 15) 3.45x106
16) 1.2x ) 5.7x ) 3.798
19) ) )
22) ) ) .14
25) ) )