Addtraction and Subdition

Working with Hayden on his math is becoming more and more entertaining.  I've noticed they skip around in what they do, which doesn't make sense to me, but whatever.  We've managed to make math somewhat fun at home and he's becoming more and more enthused about working on it.  We've got a whiteboard on the wall in his room and almost every night, we work on some multiplication.  He still doesn't know the tables (they just starting to move on from 0s, 1s, and 2s), but he knows the basics of how to multiply two-digit numbers times two-digit numbers (well, the basics as I've taught him, not the shit he learns in school).

Once in a while, the teacher throws in some sort of review material, consisting of little more than a worksheet with addition and subtraction problems.  Hayden does mostly OK with this, but he still doesn't pay enough attention to detail.

For example, he likes to consolidate the two disciplines of addition and subtraction.  Sometimes he'll take

        76     or    76
     - 23          + 23
        93             59

He'll subtract the one's column and add the ten's column, or vice-versa.  When I mention he might need to look at those again, he'll argue that he's right, because when you add or subtract the given numbers, you do indeed come up with what he's got...at least in his world.

I'm reminded on one of Hayden's favorite cartoons, the one where Bugs Bunny is in Transylvania and he keeps casting spells of 'Hocuscadabra' and 'Abracapocus.'  I like to call this new math 'Addtraction' and/or 'Subdition' and it's extremely enteraining to work on.  You should give it a try.