All in agreement except... there is no universal method shocked.

The standard algorithm I learned for subtraction as a child (a generation, a continent and an ocean away) is somewhat different from the one my kids are being taught here and now.

I happen to think that the "standard" algorithm for subtraction is ugly and clunky, but I might be slightly biased wink. My poor oldest son, whom my husband and I taught how to subtract and divide "the universal way" before school covered the subject was mightily confused for a while...