Question

Write 0.003 as the product of a whole number and a power of 10

Answer 1

3 × $10^{-3}$

expressing as a whole number, using the digits available, we obtain

3

Now consider the position of the decimal point in the original 0.003

To get it back to where it should be we require to move the decimal point 3 places to the left , denoted by a negative exponent

0.003 = 3 ×  $10^{-3}$