How do you use scientific notation to express the number 355000 to one significant figure?
The answer is
Numbers written in scientific notation have a coefficient which begins with a single non-zero digit, 1-9 inclusive. That number is then multiplied by the base 10 raised to a power (exponent). If the decimal was moved to the right, the exponent will be negative, such as
The exponent indicates how to expand the number to standard notation. If it is positive, move the decimal to the right the same number of places, such as
The following website may be helpful. https://www.nyu.edu/pages/mathmol/textbook/scinot.html