Scientific notation, when moving the decimal to the right one do you add or minus one to the power
Example: 1234567890. Suppose I want to turn it into scientific notation. Start counting from the right until you get to last digit "1", which you DO NOT include in your count. If you did that, you should get 9 numbers. Then you put the decimal point at the end of the last digit you counted, which was 2 like this: 1.234567890. Now, the 9 digits you counted to the right of decimal point become power of 10 like this: 1.234567890 x 10^9. Now, by convention, only 2 decimal places are kept, especially for very large numbers, like this: 1.23 x 10^9.
And that is your scintific notation.
