Question

The population of Portland,Oregon,has recently grown to more than 500,000. what is the order of magnitude for the number of people in Portland?

Answer 1

In order to find the order, first we need to convert it into base-exponential form, 

Here, 5,00,000 = 5 * 10⁵

Now, Order means, "whole number" with exponential number. Here, Your whole number is 5

In short, Your Answer would be 5

Hope this helps!