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Conferences  The CTK Exchange Early math |
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a wrong solution on this website
I guess I'll start by being honest. I'm not a mathematician. In fact I'm barely a beginner. But, I have some skills.
I was presented wi... |
pumpedcacti |
Feb-28-12 08:22 AM
by odell6rivera |
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Can anyone check a result
Hello!
Can anyone check a result for me?
It wrote a program to multiply big numbers and I have diffiulties to check the results b... |
Polar |
Aug-22-10 02:30 PM
by Polar |
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try this puzzle ?/?? + ?/?? + ?/?? =1
ALBERT FROM TAIWAN
I don't remenber Where I have found this puzzle
it goes like this:
?/?? + ?/?? + ?/?? =1%0... |
albert1950 |
Jun-27-10 11:30 PM
by Kenneth |
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What is a number?
I read Professor Bogomolny's "What's a Number?" but it is not clear to me what a number is. I suppose a number is a relative quantity. I s... |
Steven |
Dec-28-09 09:15 AM
by alexb |
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error found
Pythagorean Theorem Proof #44 has an error in the second sentence beginning with, "Start with ..." It states that "A" is "the midpoint ... |
kathleen styer  |
Mar-11-09 04:40 PM
by alexb |
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wisdom of calling irrational numbers real
At the URL http://www.cut-the-knot.org/do_you_know/numbers.shtml#deficient
it says,
Ian Stewart questions the wisdom of calling irra... |
rao |
Mar-11-09 04:35 PM
by alexb |
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Is this a mathematical theorem ?
A few days ago, I did a geometric question ,and found a very interensting result as below:
¡¼ABCD is a square, and P is a randomly chose... |
albert1950 |
Feb-13-09 07:56 AM
by Jutta |
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Grade 4 math???
My son came home today and said that he had to use "front end and compensation "to solve a math problem 523+2150
I have never heard of this%... |
viking1 |
Dec-01-08 04:40 PM
by alexb |
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Can anyone proves the following question?
ALBERT FROM TAIWAN
Can anyone proves the following questions ?
(1.)A negative number multiplied by a negative number the result will
b... |
albert1950 |
Jul-09-08 08:01 AM
by alexb |
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calculator suitable for high school students ?
ALBERT FROM TAIWAN
Hi everybody:
I teach mathematics in a junir high schhool,after each test I
must grade students' paper,a few ... |
albert1950 |
Jun-17-08 10:42 AM
by alexb |
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A math puzzle
ALBERT FROM TAIWAN
As below it is a math puzzle:
A father ,who was a mathematician, "send" some amount of dollars to his son (w... |
albert1950 |
Jun-14-08 04:27 PM
by albert1950 |
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Math
My child was quized at school to come up with the number 24 using only four numbers. They are 7 5 3 1. They can each be used only once and you can u... |
Laura |
Apr-15-08 06:56 AM
by leonsotelo |
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Can't reply to 'stumped' ...
This is in response to Jack...
I think the situation you propose, uniquely using the digits 0 to 9, combined into decimal or integers to form... |
Laocon |
Jan-15-08 08:08 AM
by quintopia |
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Algebra
Can someone please tell me what the line between the two numbers in a fraction is called eg in the fraction 2/7, the line between the 2 and the 7%... |
Geoff Egarr |
Jun-23-07 11:23 AM
by manish |
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probability
I'm an adult but stumped by the answer to this 5th grade test problem:
Sam spins the spinner 18 times with the following results -
Grape = 5... |
tennyson |
Jan-30-07 07:44 AM
by Kevin |
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black-scholes equation
hi every body
i'm asking if any body knows about black-scholes equation... ... |
hthr hgugl |
Dec-06-06 10:40 AM
by mpdlc |
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algebraic opertations
years ago i read in a math puzzle book, the name of which i forgot, that was translated from russian that if you choose any positive integer great... |
elgr53 |
Aug-01-06 08:29 AM
by Gino |
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Math Questions in addition ( I Stumped)!!!
I'm a parent & I'm stumped I'm trying to get some help for my 3rd grader. What two odd numbers added together equal an odd number? & What ... |
Ms. C |
May-10-06 02:12 PM
by mvml |
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Kurdish/Turkish method of teaching maths
Does anyone have information of a technique of teaching adding, subtraction, multiply and divide using the knucles joints on a persons hand? I h... |
TWere |
May-11-05 11:51 AM
by Warjat |
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maty
I don't know
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K-tie |
Apr-01-05 00:13 AM
by K-tie |
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is math easy ?
I'm teacher in elementary school. I confuse because some of my students always said " I don't want to do it" or "it is difficult". So what... |
nina |
Mar-14-05 11:01 PM
by Andrew |
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Just For Fun! Magic Y
Another fun, first grade "challenge" problem. We've already solved this one, can you???
Magic Y
X--------X
--X-----X%0... |
DoubleE |
Jan-17-05 08:35 PM
by alan66scot |
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Just For Fun! Magic C
Another fun, first grade math "challenge" problem. We've already solved this one, can you??
Magic C
Use the numbers 1 - 8 ... |
Double E |
Dec-06-04 00:35 AM
by alexb |
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Just For Fun! Magic Mini-Triangles
Another fun, first grade "challenge" problem. We've already solved this one, can you??
Magic Mini-Triangles
X----X----X
... |
DoubleE |
Sep-06-04 11:13 PM
by alexb |
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Math Glossary on CTK website
I would like to obtain a printed copy of the Math Gloosary but I have ony been able to print a listing of the index. It seems that I must open every ... |
1mathworld24 |
Mar-01-04 03:34 PM
by alexb |
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Just For Fun! Magic T
Another fun, first grade "challenge" problem. We've already solved this one, can you???
Magic T
X X X X X
----X
----X%0... |
DoubleE |
Feb-12-04 08:51 AM
by ECON |
4
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Just For Fun! Magic Square
Another fun, first grade "challenge" problem. We've already solved this, can you??
Magic Square
%... |
DoubleE |
Jan-22-04 02:47 PM
by Jeff |
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Just For Fun! Magic I
My first grade son is working on a series of math "challenge" problems that others may find fun and interesting to solve! We've already solve... |
DoubleE |
Jan-09-04 11:45 AM
by alexb |
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pentagon addition
Using numbers 1-10 place the numerals on each corner with one numeral in the midline. use each numeral 1 time, make the 3 numerals on each side add... |
Victorious-Not |
Jan-08-04 09:16 PM
by alexb |
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Cryparithmic Puzzle
Dear friends ,
i lokked around for solving these type of puzzles.
i could not find any idea to solve
spiro * 7 = agnew
how to sol... |
t3h84 |
Dec-31-03 08:42 AM
by alexb |
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