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4. Example 9-3c Objective Write numbers greater than 100 in scientific notation and in standard form

5. Example 9-3c Vocabulary Scientific notation A number that is written as the product of a number and a power of ten 4.2 x 10 3

6. Lesson 9 Contents Example 1Write a Number in Standard Form Example 2Write a Number in Scientific Notation

7. Example 9-1a Write in standard form. Answer: 3,400,000 1/2 Write problem 3.4  10 6 Use calculator to solve Put 3.4 in calculator 3.4 Push multiplication sign [ * ] 10 Put the base of 10 in the calculator Push the y x key [ y x ] Put the exponent of 6 in calculator 6= Push the = sign 

8. Example 9-1b Answer: 73,000 Write in standard form. 1/2 

9. Example 9-2a Write 428,000 in scientific notation. 2/2 Write problem 428,000 Remember: If there is no decimal in the number it is assumed to be to the right of the number 428,000. Draw arrow to the right of the first non-zero number Write the new number with the decimal where you placed the arrow 4.28 Note: The zeros to the right of the 8 have no value so you do not have to include them

10. Example 9-2a Write 428,000 in scientific notation. Answer: 4.28  10 5 2/2 Count how far the new decimal is from the old decimal 428,000428,000. 4.28 Put a multiplication symbol  Scientific notation uses the powers of 10, so put a factor of 10 10 Put the 5 as the exponent of 10 10 5

11. Example 9-2b Write 1,750,000 in scientific notation. * 2/2 Answer: 1.75  10 6

12. End of Lesson 9 Assignment Lesson 1:9Scientific Notation10 - 33 All