CarlosTheDJ
Antediluvian
- Joined
- Feb 1, 2007
- Messages
- 7,001
- Location
- Pebble Mill
Still good to be able to do multiplicaction & long division in your head though.
And spelling.
Still good to be able to do multiplicaction & long division in your head though.
I've never needed to do long division in my head after leaving school.Still good to be able to do multiplicaction & long division in your head though.
Yes but deprive them of this phone and they can't do anything. We've already agreed that telling the time is beyond them. I expect adding up and map reading is as well. It's the dependency on the phone that is the problem.
Or 'can't-be-botheredness'.According to the Institute for Neuro-Physiological Psychology an inability to tell the time can sometimes be a symptom of a condition called Neuro-motor immaturity!
Bring back sundials.
I've never needed to do long division in my head after leaving school.
I use an abacus and write my answers on vellum with a quill.I sometimes prefer to do it mentally rather than use a calculator.
I use an abacus and write my answers on vellum with a quill.
I use an abacus and write my answers on vellum with a quill.
I've never needed to do long division in my head after leaving school.
Pah. I use my P45's.Pff. I use a tablet. A stone tablet. And chisel.
Maybe they would know to add the other 16 at the end instead?An older person, for example, if asked to calculate 11 x 16 in their head would in all likelihood times the 16 by 10 and then take off 16. Perhaps new methods of teaching don't allow kids to do that.
Lol, yes I did realise! That is how I do simple maths too.Oops I just realised that I wrote but I hope that you understand trying to illustrate how a mind may calculate something. It should, of course, have been 9. :mcoat:
I'm amazed I never knew that, brilliant.How I learned to multiply a double digit number by 11 is to add the two numerals and put them in the middle. So 11x16=176 because 1+6=7, and that 7 goes between the 1 and 6.
I'd heard of this one. It's things like this that I like about maths.How I learned to multiply a double digit number by 11 is to add the two numerals and put them in the middle. So 11x16=176 because 1+6=7, and that 7 goes between the 1 and 6.
I was taught a 'Napier's Bones' method of multiplication at an early age (from a class-mate).Anybody else know any nifty tricks with figures?