Long Division Without a Calculator
I trying to work out how to do long division without knowing anything beyond the 10 times tables
The solution offered on websites such as ....
http://www.mathsonline.org/pages/longdiv.html & http://www.mathsisfun.com/long_division.html
... are fine for small divisors, however if you try to calculate 1,230,646 / 458
you still wind up having to divide 2748 by 458 mentally (at step 3 of mathsonline)
So is it possible without doing loads of multiplication guesses ?
(If it is impossible I'll still be awarding points for the best answer(s))
The solution offered on websites such as ....
http://www.mathsonline.org/pages/longdiv.html & http://www.mathsisfun.com/long_division.html
... are fine for small divisors, however if you try to calculate 1,230,646 / 458
you still wind up having to divide 2748 by 458 mentally (at step 3 of mathsonline)
So is it possible without doing loads of multiplication guesses ?
(If it is impossible I'll still be awarding points for the best answer(s))
SOLUTION
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>>>> you still wind up having to divide 2748 by 458 mentally
No, you don't have to. After you checked that 2748 is greater equal to 458 you can do a loop running a counter from 2 to 10 where you add 458 to a variable initial set to 458. Whenever the sum becomes greater than 2748 the next digit was found and is counter-1.
No, you don't have to. After you checked that 2748 is greater equal to 458 you can do a loop running a counter from 2 to 10 where you add 458 to a variable initial set to 458. Whenever the sum becomes greater than 2748 the next digit was found and is counter-1.
ASKER CERTIFIED SOLUTION
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ASKER
NovaDenizen - very interesting reply
and exactly right too. With a little practice, very easy also
Why don't you write a long-division program yourself... It's not as difficult as you think. What programming language are you familiar with?
Is ithis to run in DOS or in Windows. Have you considered a batch file or CMD (Command) file?
Is ithis to run in DOS or in Windows. Have you considered a batch file or CMD (Command) file?
There are a method for each situation. If you have to perform a division with pen and paper, you would use the method you learn at the primary school (that NovaDenizen just illustrated). If you have to do it by mind, you'll use an estimate like d-glitch one.
What is your situation ?
What is your situation ?
ASKER
> What is your situation ?
I was just wondering if all long division can be done with pen and paper
Thanks for all responses
>>> See if you can solve this in under 5 minutes http://www.mathsonline.org/pages/puzzle.html?30*
No Peeking!
I was just wondering if all long division can be done with pen and paper
Thanks for all responses
>>> See if you can solve this in under 5 minutes http://www.mathsonline.org/pages/puzzle.html?30*
No Peeking!
ASKER
Thanks - Try the match puzzle
Just go to Start > Run > type Cmd and hit enter
the type
"set /a 1230646 / 458" (without Quotes)
You will get the answer
Hope you will find the solution