Answer:
1.0 x 10^3 = 1000
1.0 x 10^-3 = 0.001
Explanation:
Scientific notation is used to shorten the amount of zeros you have to write out for a number.
To take a number out of scientific notation, move the decimal a number of times equal to the exponent: in my example it would be 3. If the exponent is positive, move the decimal to the right; if it is negative, move the decimal to the left.