# Scientific Notation

• May 27th 2005, 01:15 PM
Scientific Notation
WRITE THE COLORED NUMBER IN SCIENTIFIC NOTATION

THE HUMAN BODY RESPONDS TO WARMTH AND COLD WITHIN 0.1 TO 0.2 SECONDS.

HOW DO YOU WRITE NUMBERS IN SCIENTIFIC NOTATION? :confused:
• May 27th 2005, 02:57 PM
Math Help
scientific notation
Here are a few examples of scientific notation. Let me know if it makes sense.
$\displaystyle 1 * 10^{-1} = 0.1$
$\displaystyle 2 * 10^{-1} = 0.2$
$\displaystyle 2 * 10^{-3} = 0.002$
$\displaystyle 2 * 10^{3} = 200$
• May 27th 2005, 03:05 PM
I Understand It Now, Thanks! :)
• Jul 22nd 2006, 06:48 AM
Quick
Quote:

Originally Posted by Math Help
Here are a few examples of scientific notation. Let me know if it makes sense.
$\displaystyle 2 * 10^{3} = 200$

it should be $\displaystyle 2\cdot10^3=\bold{2000}$
• Jul 22nd 2006, 07:21 AM
Soroban

First of all, release your CapsLock.
All upper-case letters is impolite . . . it's shouting.

Quote:

How do you write numbers in scientific notation?

A quantity in scientific notation is a number $\displaystyle n,\;1 \leq n < 10,$ times a power of 10.

Examples

. . $\displaystyle (a)\;238,000 = 2.38 \times 10^5$

. . $\displaystyle (b)\;0.00057 \,= \,5.7 \times 10^{-4}$

In example (a), $\displaystyle 238,000$ was transformed to $\displaystyle 2.38$
. . by moving the decimal point (far right) five places to the left.
In effect, we have divided by $\displaystyle 100,000$
. . so we multiply by $\displaystyle 100,000 = 10^5$

In example (b), $\displaystyle 0.00057$ was transformed to $\displaystyle 5.7$
. . by moving the decimal point four places to the right.
In effect, we have multiplied by $\displaystyle 10,000$
. . so we divide by $\displaystyle 10,000$ ... or multiply by $\displaystyle \frac{1}{10,000} = 10^{-4}$

• Jul 22nd 2006, 08:20 AM
Jameson
Quote:

Originally Posted by Soroban

First of all, release your CapsLock.
All upper-case letters is impolite . . . it's shouting.

Yes. Consider the user warned. No shouting.
• Jul 22nd 2006, 05:55 PM
ThePerfectHacker
Why did you revive a dead thread from a few months? The user is probably never going to view it.
• Jul 22nd 2006, 06:00 PM
Quick
Quote:

Originally Posted by ThePerfectHacker
Why did you revive a dead thread from a few months? The user is probably never going to view it.

I saw a guest looking at it, and since I'm not a moderator I couldn't edit his post, so I just posted the correction. And then came Soroban...