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Quandaries & Queries
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Kumon 1998-11-09
From Kathy Steele:
Perhaps I am not spelling this correctly,since there is nothing to be found on Kumin Math, but my search for info on this topic led to this site. My understanding is that it is a program of repeated drills. Do you have any additional information? I know that this will come up during Parent conferences since some of my Jr. High students are talking about it.
Answered by Jack LeSage and Harley Weston.
Triangular Numbers 1998-10-30
From Matt:
i would like to know about triangular numbers and it history i would also like to know about the history of prime numbers thank you
Answered by Chris Fisher.
Divisibility by 11 1998-10-28
From Pat Duggleby:
I am an upgrading instructor at a drop-in program in Regina. One of my students is taking General Math 30 through correspondence, and we have run into some confusing instructions. The section is about divisibility rules, and we did just fine up until the rule for Divisibility by 11. The statement is as follows:
If the difference between the sum of the odd-numbered digits and the sum of the even-numbered digits, counted from right to left, is divisible by 11, then the number is divisible by 11.
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Answered by Penny Nom.
A Puzzle 1998-10-27
From Bruce Bragnu:
We are trying to solve what SHOULD BE a simple 7th grade problem and have run into a wall.
It is:
ABCD
ABCD
ABCD
ABCD
-------
EBEA

It is an addition problem. Each particular letter represents the same digit. We are looking for what number "B" represents. We have tried a multitude of solutions and have come up empty.
Answered by Penny Nom.

Fractions 1998-10-27
From Jessica Braimoh:
I have a problem that I just can't figure out!!

Put into a fraction a) -1.157... b) 0.046... c) 0.032... d) -0.3234... Please show how you got the answer and how you came to it(step by step)
Thanks Jessica Braimoh grade 9 Ontario
Answered by Harley Weston.

A Six Digit Number 1998-10-27
From Craig Bedard:
If a certain six-digit number is split into two parts, one constituting the first three digits and the other the last three digits, and the two parts are added and the resultiong sum squared, it is found that the product is the original six digit number. What is the original six-digit number?

At first it seemed liked an impossible question, until it hit me...how long will it take you?
Answered by Jason Stein and Dan Usselman.

A Number Trick 1998-10-26
From Brenda Meagher:
I'm a 37 year old mother and i have returned to school for personal reasons. I was faced with this question.
Choose any number less than 10, multiply it by 8547, then take your answer and multiply it by 13. I chose the number 8.

8547
x 8
--------
68376

and

68376
x 13
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205128
68376
---------
888888

Any number chosen from 1 to 9 will result in the same form of answer.If the number two is used you will end up with 222,222.etc So my question is, is there another number that will results in the answers.
Answered by Harley Weston.

Logs 1998-10-21
From Benny:
What does log means? How come we have to use log
Answered by Chris Fisher.
Complementary and Supplementary Angles 1998-10-21
From Christina Saunders:
I am in 9th grade and my math teacher wanted us to find out why complimentary angles are called complimentary and why supplimentary angles are called supplimentary. I have looked everywhere and asked numerous people, but I have yet to find an answer. My math teacher said it had something to do with trigonometry. Do you have an answer for me?
Answered by Chris Fisher and Penny Nom.
The Left Side of a Parabola. 1998-10-20
From Shay:
Find the parametrized equation for the left half of the parabola with the equation: Y=x^2-4x+3
Answered by Chris Fisher.
Adding Fractions 1998-10-15
From Lindsay:
please help me!!!!
Answered by Harley Weston.
Problem Solving 1998-10-15
From Pamela Fisher:
Can you give me a comprehensive list of problem solving stategies. I teach grade one in a K to 8 school and we are working on improving problem solving at all grade levels. I have heard that there is a list of various strategies that we could adapt to different grade levels. Any help you give me would be appreciated.
Thank you. Pamela Fisher

Answered by Walter Whiteley.
A Linear System 1998-10-08
From Jason Bussey:
The linear systems with the following pattern all have the same solution. Is their some kind of reasoning as to why this is so?

2x+3y=4
3x+4y=5

4x+5y=6
5x+6y=7

The solution is always x=-1, y=2

Thank you
Jason
Answered by Penny Nom.

Operations Research 1998-10-08
From Lisa Barrett:
What is the history of operations research and the study of linear programming?
Answered by Judi McDonald.
Fractions 1998-10-07
From Nikki Lakevold:
-5 over 9 minus -2 over 3 plus -7 over 6 = ???

This is a fraction question and I really don't know why the back of my textbook says -19 over 18 when I got -23 over 18,, am I wrong???
Answered by Harley Weston.

 
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