It takes light 5.3 × 10-6 seconds to travel one mile. What is this time in standard notation?
In order to convert this number to standard notation, multiply 5.3 through the factor of 10-6. Since 10-6 is equal to 0.000001, 5.3 × 0.000001 is equal to 0.0000053. Equivalently, move the decimal point in 5.3 six places to the left because the exponent on the 10 is negative 6.