If the following numbers are put in order from least to greatest, what number is the third number in the list: 3.1×10^5, 4.5×10^5, 3.1×10^8, 6.8×10^2, 7.3×10^5

Answer 1

First, let's convert all the numbers to a standard form.

3.1×10^5 = 310,000
4.5×10^5 = 450,000
3.1×10^8 = 310,000,000
6.8×10^2 = 680

Now let's put them in order from least to greatest:

680, 310,000, 450,000, 310,000,000, 730,000

The third number in the list is 450,000.