^{2}, it means that 5*100 = 500, so as we see that if power is 2 over ten that means two zeros in front of two. If we are having a expression 4 * 10

^{-2}it means that .004, so whenever we have any power in minus then we have to put two zeros in left with a decimal. Now we will see how to write in scientific notation? For writing scientific notations we have to follow the points given below,

If we are having power in minus then we have to put zeros in left and zeros will be one less than the power, and if we are having power in plus then we have to put zeros in right and zeros will be equal to power. Now we will see an example how we can convert a number in scientific notation.

Example: Convert .00000008 in to scientific notation?

Solution: As we are seeing in the problem there are eight zeros in the left of eight and we have to remove all the zeros from left side, so when we remove zeros from left side the power added will be in minus, so we can write our equation as,

8 * 10

^{-9}. This is the required solution of the given problem.