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tonipoo610 Group Title

ScientificNotation Helppppp

  • 2 years ago
  • 2 years ago

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  1. tonipoo610 Group Title
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    |dw:1352247570190:dw|

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

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

    • 2 years ago
  4. tonipoo610 Group Title
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    9944

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

    • 2 years ago
  6. tonipoo610 Group Title
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    cyes

    • 2 years ago
  7. phi Group Title
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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

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

    • 2 years ago
  9. tonipoo610 Group Title
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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...

    • 2 years ago
  10. phi Group Title
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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)

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

    • 2 years ago
  12. phi Group Title
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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

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

    • 2 years ago
  14. phi Group Title
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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

    • 2 years ago
  15. tonipoo610 Group Title
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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

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

    • 2 years ago
  17. tonipoo610 Group Title
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    ooo

    • 2 years ago
  18. phi Group Title
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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

    • 2 years ago
  19. tonipoo610 Group Title
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    ok got it

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

    • 2 years ago
  21. tonipoo610 Group Title
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    yup! thxx

    • 2 years ago
  22. tonipoo610 Group Title
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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?

    • 2 years ago
  23. phi Group Title
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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?

    • 2 years ago
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