Question

how do you write 6.6 × 10^{-3} in standard form?

Explanation:

Step1: Recall negative - exponent rule

A number in scientific notation $a\times10^{-n}$ ($a$ is a number between 1 and 10, $n$ is a positive integer) can be written in standard form by moving the decimal point $n$ places to the left.

Step2: Move the decimal point

For $6.6\times 10^{-3}$, since $n = 3$, we move the decimal point 3 places to the left. Starting with 6.6, moving the decimal point 3 places to the left gives 0.0066.

Answer:

0.0066