Estimate the product of 39 and 41?

Answer 1

80

Answer 2

Oh, dude, you want me to do math? Fine, fine. So, like, to estimate the product of 39 and 41, you can round them both to 40. Then, you just multiply 40 by 40, which is 1600. There you go, quick math for ya!

Answer 3

(x-1) (x+1) = x2 - 1.

So 39 (= 40-1) times 41 (= 40+1) is 402 - 1 = 1600-1 = 1599.

THE ANSWER ESTIMATED IS 1,600