Okay what is that up and down method of simple math called?
I cannot remember this term whatsoever and I need it. Its where the numbers are in a vertical format, and you do the carrying thing. Whats it called?
Its not addition. That is not a method to solve the problem. Im talking about a way to solve the math problem. Not the addition or subtraction parts.
Its a method to solve addition, subtraction, multiplication, or division. Not the thing itself