Question

Explain how to find 40×50 using mental math

Answer 1

multiply 4 X5 which equals 20 then add two zeros because 40 has one zero and 50 has one zero hope that helps

Answer 2

Multiply 4 * 5, which equals 20, and add the two zeroes(from 40 and 50) on the end.

That gives us:

2000