Question

express this number in scientific notation. 621,000 621,000 =

Explanation:

Step1: Move decimal point

Move the decimal - point 5 places to the left to get a number between 1 and 10. So, $621000$ becomes $6.21$.

Step2: Determine exponent

Since we moved the decimal point 5 places to the left, the exponent of 10 is 5.
The scientific - notation is of the form $a\times10^{n}$, where $1\leq a<10$ and $n$ is an integer.

Answer:

$6.21\times 10^{5}$