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Scientific Notation
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Scientific Notation
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Scientific Notation COEFFICIENT It must be more than 1 but
less than 10
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Scientific Notation BASE COEFFICIENT It must be more than 1 but
less than 10 BASE
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Scientific Notation BASE COEFFICIENT It must be more than 1 but
THE EXPONENT or POWER OF TEN COEFFICIENT It must be more than 1 but less than 10 BASE
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Scientific notation: A method for expressing, and working with, very large or very small numbers.
Copyright © 2010 Ryan P. Murphy
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Scientific notation: A method for expressing, and working with, very large or very small numbers.
Copyright © 2010 Ryan P. Murphy
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“5 point 7 times ten to the sixth power”
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To write a number in scientific notation:
Put a decimal point after the first digit and drop the zeroes. 146,000,000 = 1.46
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Note that the places start after the decimal point
To find the exponent, count the number of places from the decimal to the end of the numbers. In there are 8 places. Therefore we write 146,000,000 as 1.46 x 108 Note that the places start after the decimal point
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What is 567,000 in scientific notation?
Copyright © 2010 Ryan P. Murphy
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5.67 x 105
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What is 40,100,000,000,000 in scientific notation?
This is the distance from earth to the nearest star Proxima Centauri. Copyright © 2010 Ryan P. Murphy
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Answer! 40,100,000,000,000 = 4.01 x 1013 Copyright © 2010 Ryan P. Murphy
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What is 8,000,000,000 in scientific notation?
A projection for the number of people on earth! Copyright © 2010 Ryan P. Murphy
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Answer! 8,000,000,000 = 8 x 109 Copyright © 2010 Ryan P. Murphy
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What is 9.9 x 107? - Work in the opposite direction
This is the distance from the Earth to Mars in Kilometers. Copyright © 2010 Ryan P. Murphy
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Answer! 9.9 x 107 = 99,000,000 There needs to be six places after the decimal. Since the .9 is the first, you would add 6 zeroes to equal 107.
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What is x 105 ? The distance in kilometers from the Earth to the Moon.
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Answer! x is 384,400 km
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Scientific notation can be used for very small numbers as well.
The decimal number written in scientific notation would be 6.5 x 10-7 Copyright © 2010 Ryan P. Murphy
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What is 0.00053 in scientific notation?
Copyright © 2010 Ryan P. Murphy
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Answer! = 5.3 x 10-4 Copyright © 2010 Ryan P. Murphy
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What is 0.00000042 in scientific notation?
Copyright © 2010 Ryan P. Murphy
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Answer! is 4.2 × 10-7 Copyright © 2010 Ryan P. Murphy
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What is 9,780,000,000,000,000,000,000,000,000 in scientific notation?
Copyright © 2010 Ryan P. Murphy
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Answer! 9,780,000,000,000,000,000,000,000,000 9.78 x 1027 Copyright © 2010 Ryan P. Murphy
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What is (2 x 104) x (4 x 103) ? Copyright © 2010 Ryan P. Murphy
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What is (2 x 104) (4 x 103) ? What is (2 x 104) (4 x 103)
1) Multiply the coefficients 2) Add the exponents (base 10 remains) What is (2 x 104) (4 x 103) Copyright © 2010 Ryan P. Murphy
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What is (2 x 104) (4 x 103) ? Answer! 8 x 107 or 80,000,000
Copyright © 2010 Ryan P. Murphy
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Write these numbers using the scientific notation
DO THE PROBLEMS Write these numbers using the scientific notation 35 x 10 5 = 3.5 x 10 6 6 x 10 −10 9.7 x 10 −3 1.7 x 10 8
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What is (3 x 104)/(2 x 103) ? Copyright © 2010 Ryan P. Murphy
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2) Subtract the exponents (base 10 remains)
What is (3 x 104) / (2 x 103) ? 1) Divide the coefficients 2) Subtract the exponents (base 10 remains) What is (2 x 104) (4 x 103) Copyright © 2010 Ryan P. Murphy
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What is (3 x 104) / (2 x 103) ? What is (2 x 104) (4 x 103)
1) Multiply the coefficients 2) Subtract the exponents (base 10 remains) Example 1: (3 x 104) / (2 x 103) = 1.5 x 101 What is (2 x 104) (4 x 103) Copyright © 2010 Ryan P. Murphy
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DO THE PROBLEMS Write these numbers using the scientific notation. Round them to 2 decimal places, 1.50 x 10 −2 3.50 x 10 −15 0.50 x 10 −11 = 5.00x 10 −12 3.75 x 10 12
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) =
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) =
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) =
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) = 32 x 10?
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) = 32 x 10?
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) = 32 x 10?
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) = 32 x 103
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Scientific Notation exercise
How do you solve this?? (3.0 x 104) + (2.0 x 103) = (30.0 x 103) + (2.0 x 103) = 32 x 103 = 3.2 x 104
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