compare 4*10^5 and 5*10^3

To compare 4*10^5 and 5*10^3, we first need to calculate the values of each expression.

4*10^5 = 4 * 100,000 = 400,000

5*10^3 = 5 * 1,000 = 5,000

Now, we can see that 4*10^5 is greater than 5*10^3 because 400,000 is greater than 5,000.