posted by Ankur .
The mean distance of the sun from the sun is 150 million kilometres.Express this in scientific notation.
1.5 x 10^8
150 000 000
You start with the 0 on the far right (as that is where the decimal place is) and you see how many times you must shift it over (in this case 8) before the number is greater than or equal to 1 but less than 10.