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4. Example 9-5e Objective Express numbers in scientific notation

5. Example 9-5e Vocabulary Scientific Notation A number written as a product of a factor and a power of 10 And the factor must be greater than or equal to 1 and less than 10 8.74 · 10 8

6. Lesson 9 Contents Example 1Express Numbers in Standard Form Example 2Express Numbers in Standard Form Example 3Write Numbers in Scientific Notation Example 4Write Numbers in Scientific Notation

7. Example 9-1a Answer: 962,000 Write in standard form. Write the problem 9.62  10 [y x ] 5 = 962,000 9.62  10 5 Use the calculator Put 9.62 in calculator Push the  sign Put 10 in calculator Push the exponent key [y x ] Put the exponent 5 in calculator Push the = sign 1/4

8. Example 9-1b Answer: 53,200 Write in standard form. 1/4

9. Example 9-2a Answer: 0.00000285 Write in standard form. Use Calculator 2.85  10 [y x ] 6 - = 0.00000285 Write problem 2.85  10 -6 Put 2.85 in calculator Push multiplication sign  Put 10 in calculator Push the exponent key [y x ] Put the exponent 6 in calculator then +/- Push the = sign 2/4

10. Example 9-2b Answer: 0.000381 Write in standard form. 2/4

11. Example 9-3a Write 931,500,000 in scientific notation. Answer: Use calculator 931,500,000 [2 nd ] [sci] Put number in calculator 9.315  10 8 3/4 Write the problem 931,500,000 Push the 2 nd key Push the sci (it is the scientific key) or #5 9.315 08 Must write with power of 10 Write 9.315 Write  10 Write exponent of 8 9.315  10 8

12. Example 9-3b Write 35,600,000 in scientific notation. Answer: 3/4 3.56  10 7

13. Example 9-4a Write 0.00443 in scientific notation. Answer: 4.43  10 -3 4/4 Write the problem 0.00443 Put number in calculator 0.00443 [2 nd ] [sci] Push the 2 nd key Push the sci (it is the scientific key) or #5 4.43 -3 Must write with power of 10 Write 4.43 Write  10 Write exponent of -3 4.43  10 -3

14. Example 9-4b Write 0.000653 in scientific notation. Answer: * 4/4 6.53  10 -4

15. End of Lesson 9 Assignment Lesson 2:9Scientific Notation13 - 36 All