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**Aim: How is Scientific notation used?**

Do Now: - In your notebooks, explain why scientists use scientific notation.

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**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 = =

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**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 using the number of spaces the decimal moved as your exponent. If there is no decimal where does it belong?

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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.

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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) 3.47x106 16) 1.2x ) 5.7x ) 3.798 19) ) ) 22) ) ) .14 25) ) )

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Aim: How to write in Scientific Notation and Count Significant Figures DO NOW: 1. WHAT DOES 10 5 MEAN? 2. WHAT IS THE VALUE OF 10 5. 3. USING YOUR CALCULATOR,

Aim: How to write in Scientific Notation and Count Significant Figures DO NOW: 1. WHAT DOES 10 5 MEAN? 2. WHAT IS THE VALUE OF 10 5. 3. USING YOUR CALCULATOR,

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