5x10^5 is how many times as large as 1x10^5?

Let's find out how much 5 * 10^5 is:

10^5 = 100000 (basically include 5 zeroes after the 1)

5 * 100000 = 500000

Now the question is asking how many times larger is that compared to 1 * 10^5?

Well we know 10^5 = 1000000, and 1 * anything is that number. So 1 * 10^5 = 100000.

This means that 5*10^5 is 5 times larger than 1*10^5