don_quixote
Trent End
i don't either, but i get a rough idea
Mental Arithmetic
- Thread starter IdleRich
- Start date
I can add/subtract/multiply/divide, but the rest gives me a headache. I have to use paper and pen for percentages, and have to do long division to work them out, I can't do them in my head. In fact, I've even phoned up a mate to help me calculate a total.
As for pi and cosine, forget it, I'd switched off by then. I hated maths at school, but then the teacher was a bastard. And I always check my change, cos for the past 10 years I seem to have become a magnet for those old 5p coins (the 1980s ones that are just about current 10p sized)
As for pi and cosine, forget it, I'd switched off by then. I hated maths at school, but then the teacher was a bastard. And I always check my change, cos for the past 10 years I seem to have become a magnet for those old 5p coins (the 1980s ones that are just about current 10p sized)
luka
Well-known member
i never use a till at work to check change cos i always press the wrong buttons and fuck it up so ive been doing it all in my head for years. i never make a mistake and im shit at maths. basic maths is just remembering patterns. so yeah, thats pretty fucked up. they might have been retards so good on the cake shop for having enlightened values and employing them.
baboon2004
Darned cockwombles.
What kind of percentages are we talking? Because if you can divide well enough, then most general percentages should be OK.
Circumferences and triangles etc I guess are useful for home improvement stuff, but otherwise practically of little use. As with most maths. It's just the mental arithmetic that seems imperative - else how does anyone know if they're being ripped off/the value of what they earn etc etc?
woops
is not like other people
I've heard that the only three areas in which it's possible to be a genuine child prodigy are music, maths and chess.
Mr. Tea
Let's Talk About Ceps
+ Street Fighter II, Rubick's Cube.
don_quixote
Trent End
and dance dance revolution
vimothy
yurp
Face: palm
I just google it these days, on my blackberry if necessary, quicker than using a calculator, was able to work out it was 5.25 without resorting to that this time tho. But at school, maths was my achilles heel.
I spotted a whopping error our accountant made last month in our cashflow forecast - dozy bastard had gross profit margin calculation arse backwards. That's a worry.
I spotted a whopping error our accountant made last month in our cashflow forecast - dozy bastard had gross profit margin calculation arse backwards. That's a worry.
