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tonipoo610

  • 2 years ago

ScientificNotation Helppppp

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  1. tonipoo610
    • 2 years ago
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    |dw:1352247570190:dw|

  2. tonipoo610
    • 2 years ago
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    and that would equal 9.944 x 10to the negative 6 power right???

  3. phi
    • 2 years ago
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    what is 1.08 * 9.3 ?

  4. tonipoo610
    • 2 years ago
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    9944

  5. phi
    • 2 years ago
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    are you doing the multiplication by hand?

  6. tonipoo610
    • 2 years ago
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    cyes

  7. phi
    • 2 years ago
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    When you get time, this might help http://www.khanacademy.org/math/arithmetic/decimals/v/mulitplication-8--multiplying-decimals--old-video but 1.08 * 9.3 is not 9.944

  8. tonipoo610
    • 2 years ago
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    ok wait let me retry this

  9. tonipoo610
    • 2 years ago
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    ok i to 10.044 x 10 to the -6 but the real answer is 1.0044 x10 to the -5...

  10. phi
    • 2 years ago
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    10.044 x 10^-6 that is correct. but you want it in "standard" form. 10 is too big so divide 10.044 by 10 (make it smaller) to compensate, make 10^-6 bigger by 10 (multiply by 10 which means add 1 to its exponent)

  11. tonipoo610
    • 2 years ago
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    so you have to add one or am i correct?

  12. phi
    • 2 years ago
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    Did what I wrote not make sense? think about this: you have 10.044 x 10^-6 we can multiply by 10/10 (ten divided by 10 is just 1) 10.044/10 x 10 x 10^-6 10.044/10 is 1.0044 10^1 x 10^-6 is 10^(1-6) or 10^-5 so the final answer is 1.0044 x 10^-5

  13. tonipoo610
    • 2 years ago
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    so you can't have a number less than 1 or greater than 10???

  14. phi
    • 2 years ago
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    you could, but it would not be in "standard form" if you had 0.001 you would multiply by 1000 (or just count 1,2,3 how many spots you move the decimal point). then you would compensate by multiplying by 10^-3 1.000 x 10^-3

  15. tonipoo610
    • 2 years ago
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    ok i new that i am just learning that .0001..you would go to the right 4 times and you would get 1 x 10 to the -3

  16. phi
    • 2 years ago
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    you mean 0.0001 is 1 x 10^-4

  17. tonipoo610
    • 2 years ago
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    ooo

  18. phi
    • 2 years ago
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    0.0001 x 10000 /10000 or with exponents 0.0001 x 10^4 * 10^-4 (0.0001 x 10^4) * 10^-4 (0.0001 x 10000) * 10^-4 1.0 * 10^-4

  19. tonipoo610
    • 2 years ago
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    ok got it

  20. phi
    • 2 years ago
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    good. otherwise you won't understand the national debt, which needs scientific notation...

  21. tonipoo610
    • 2 years ago
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    yup! thxx

  22. tonipoo610
    • 2 years ago
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    ooo haha i just realize that 0 is bigger than -1 so when you have to compensate you would just add 1 that also goes with positive exponents right?

  23. phi
    • 2 years ago
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    yes, 0 is bigger than -1. but 0 is neither positive nor negative. and of course 10^0 is the same as 1, so people generally don't use scientific notation when the exponent is 0 who would want to write 2 x 10^0 when 2 is all you have to write?

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