Transparency 9

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Transparency 9
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Example 9-5e
Objective
Express numbers in scientific notation
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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 8.74 108
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Lesson 9 Contents
Example 1 Express Numbers in Standard
Form Example 2 Express Numbers in Standard
Form Example 3 Write Numbers in Scientific
Notation Example 4 Write Numbers in Scientific
Notation
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Example 9-1a
Write the problem
9.62 ? 105
Use the calculator
9.62 ? 10 yx 5
Put 9.62 in calculator
Push the ? sign
962,000
Put 10 in calculator
Push the exponent key yx
Answer 962,000
Put the exponent 5 in calculator
Push the sign
1/4
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Example 9-1b
Answer 53,200
1/4
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Example 9-2a
Write problem
2.85 ? 10-6
Use Calculator
Put 2.85 in calculator
2.85 ? 10 yx 6 -
Push multiplication sign ?
Put 10 in calculator
0.00000285
Push the exponent key yx
Answer 0.00000285
Put the exponent 6 in calculator then /-
Push the sign
2/4
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Example 9-2b
Answer 0.000381
2/4
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Example 9-3a
Write 931,500,000 in scientific notation.
Write the problem
Use calculator
931,500,000
Put number in calculator
931,500,000 2nd sci
Push the 2nd key
9.315 08
Push the sci (it is the scientific key) or 5
9.315 ? 108
Must write with power of 10
Write 9.315
Answer
9.315 ? 108
Write ? 10
Write exponent of 8
3/4
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Example 9-3b
Write 35,600,000 in scientific notation.
Answer
3.56 ? 107
3/4
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Example 9-4a
Write 0.00443 in scientific notation.
Write the problem
0.00443
Put number in calculator
Push the 2nd key
0.00443 2nd sci
Push the sci (it is the scientific key) or 5
4.43 -3
Must write with power of 10
4.43 ? 10-3
Write 4.43
Write ? 10
Answer
4.43 ? 10-3
Write exponent of -3
4/4
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Example 9-4b

Write 0.000653 in scientific notation.
Answer
6.53 ? 10-4
4/4
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End of Lesson 9
Assignment
Lesson 29 Scientific Notation 13 - 36 All