Question

Explain how to find 40x80 using mental math

Answer 1

so 40 * 80 = 3,200

4 * 8 = 32

Then add the two 0's to the end

so 3,200

Answer 2

Answer:

The best way to solve 40x80 using mental math is to break down the problem.One example would be to solve 4x8 then add the two zeros to your answer to get 3200.

Step-by-step explanation: