Question

How do you write 450,000 in scientific notation?

Answer 1

`4.50xx10^5`

Explanation:

Consider that any number written in scientific notation must contain only one integer followed by a decimal point and the required number of significant figures.

Also consider that `450 000 = 450 000.0`

Therefore, assuming three significant figures is required (a standard scientific practice), the given number may be generally written as;

`4.5xx10^n`, where `n` is an integer.

Given that the decimal place must essentially be "moved" `n` places to the left, we can say that:

`4.50xx10^5` = `450 000.0`, as the decimal point has been "moved" 5 places to the right.