What is the “Old Math” that our parents and grandparents did, and what does it involve doing that’s different than the “New Math”?

Question

Specifically the addition and subtraction part of it.

In: 19

Answer 1

I’m 60 years old and in 4th grade our math teacher taught us “old division” before teaching us the “new math” division. In old math division, you write the number you are trying to divide and guess how many times it will go into the number. Then you multiply it out. If it over, you guess lower, if it’s under, you subtract it from your first number and start over. At the end, when it comes out even, or you do not have enough left to go into it, even one time, you add up all the number from all the guesses, and the remainder, if you have one.

That is old division. I don’t remember any other “old math”, except my mother did not know how to do the “new math” division. She only knew the way I just discribed.