Write an addition problem where the result is 5.6 x 10^5 . show that the answer works and explain. 

500,000 + 60,000. This addition problem works, because 10^5 is equivalent to 100,000 And 5.6 time’s that is 560,000. 500,000 + 60,000 is 560,000, which is equivalent to the product of 5.6 * 100,000.