# The approximate distance to the sun is 93,000,000 miles, and the wavelength of its ultraviolet light is 0.000035 centimeters. How do you write both numbers in scientific notation?

Jan 1, 2016

Try moving the point left or right to change it into an exponent of $10$:

#### Explanation:

For the distance we move the decimal point (ideally placed after the last zero) to the left and count the movements that will be used as exponent of $10$.
So we get:
$9.3 \textcolor{red}{000000}$
So we moved the point $6$ places (to pass the zeros) plus one to pass the $3$ and we write:
9.3×10^7miles.

In the second case you do basically the same but moving the point to the right giving a NEGATIVE exponent of $10$.
Try by yourself you should get:
3.5×10^-5cm.