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juciystar234

  • 3 years ago

Write in standard form 6.678x10^2, 9.9673x10^2, 7.02x10^1

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  1. juciystar234
    • 3 years ago
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    AFK please help still

  2. juciystar234
    • 3 years ago
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    I think the book made a typo on these thats why I need help.

  3. juciystar234
    • 3 years ago
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    back

  4. asnaseer
    • 3 years ago
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    They all look like they are in scientific notation already

  5. juciystar234
    • 3 years ago
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    i mean standard form :P silly me

  6. asnaseer
    • 3 years ago
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    if you have some number given as:\[a.bcde\times10^x\]then this just means move the decimal place x number of times to the right. if x was negative, then it means move it x places to the left.

  7. juciystar234
    • 3 years ago
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    Ummm still kinda confused can you show me this one 6.678x10^2

  8. asnaseer
    • 3 years ago
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    e.g.: |dw:1349822658094:dw|

  9. juciystar234
    • 3 years ago
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    as an example cause I'm still confused

  10. asnaseer
    • 3 years ago
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    we moved the decimal point 2 places to the right because we have to the power of 2.

  11. juciystar234
    • 3 years ago
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    but wouldn't the decimal be a comma and how many zeros would be at the end?

  12. asnaseer
    • 3 years ago
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    no - comma's are generally used to group numbers into groups of three - to make them easier to read. e.g.:\[1,376,234.023\]

  13. juciystar234
    • 3 years ago
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    like 5.9 x 10^2 it would be 590 right?

  14. juciystar234
    • 3 years ago
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    because those are the only ones in my book like that. the rest are like 5 x 10^11/ 3.4 x 10^3 etc.

  15. asnaseer
    • 3 years ago
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    yes that is correct because: |dw:1349822896694:dw|

  16. juciystar234
    • 3 years ago
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    yea

  17. asnaseer
    • 3 years ago
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    so if the decimal point needs to move right by more places than you have digits, then you just keep adding zeros to the number

  18. asnaseer
    • 3 years ago
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    another example:

  19. asnaseer
    • 3 years ago
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    |dw:1349823030980:dw|

  20. asnaseer
    • 3 years ago
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    hope it's making sense now

  21. juciystar234
    • 3 years ago
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    oh ok

  22. juciystar234
    • 3 years ago
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    yea i see i see :D thank youz :)

  23. asnaseer
    • 3 years ago
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    yw :)

  24. asnaseer
    • 3 years ago
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    \[6.678\times10^2=667.8\]as I showed up above.

  25. juciystar234
    • 3 years ago
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    so it has no comma

  26. asnaseer
    • 3 years ago
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    you only add extra zeros to the number if the power of ten means it has to go beyond the digits already available

  27. juciystar234
    • 3 years ago
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    ohhhhhhhhhhhhhhhh ok so these 9.9673x10^2, 7.02x10^1 would have decimals and not commas too?

  28. asnaseer
    • 3 years ago
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    and again, comma's are only used to separate digits into groups of three to make the number easier to read. so if the number has 3 or less digits (before the decimal point), then you would not have any comma. some examples of comma usage: 123.12 1,123.12 12,123.12 1,123,123.12

  29. juciystar234
    • 3 years ago
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    oh ok :)

  30. asnaseer
    • 3 years ago
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    so strategy is: 1) convert the number from scientific notation to standard form 2) group every 3 digits to the left of the decimal point with comma's

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