Question

50 tens x 4 hundreds = 40 tens x 5 hundreds True or False?

Answer 1

False. You just can't flip the numbers and expect the right answer.

Answer 2

The statement 50 tens x 4 hundreds = 40 tens x 5 hundreds is a false answer. In questions like this one, unlike multiplication, you cannot just flip the two numbers and call the formula, true.
For example, in multiplication, you can do this:
5x4=4x5