High School Math

MISSION STATEMENT: To encourage and promote a greater use of the internet and computer technology in the math classroom. For educators, students, parents and homeschoolers.

Saturday, April 09, 2005

Money!


A class contributed $3.50 in nickels
and dimes for the Tsunami Relief Fund.
In all there were 45 coins.
How many were there of each kind?
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How Old?


Ray is 20 years older than Bill.
Five years ago, Ray was 5 times
as old as Bill was then. Find the
present age of both Ray and Bill.
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puzzle, amusement, enrichment or challenge question
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Sunday, April 03, 2005

Super Fork!


Look at this trident fork carefully for one minute.
Then draw it from memory. If you can draw it correctly
without referring back to this drawing more than twice, then you surely have a photographic memory.
Leave me a private message on my guest book
or post a general comment for everyone.

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puzzle, amusement, enrichment or challenge question
like this one on your school's website!

Special Number

Tom has a very special four digit number.
To divide it by 7, you only had to drop its second digit.
What is the number?

An acceptable solution might be :
Let first digit be x,
second digit be y,
and third and fourth digits be z.
The number is 1000x + 100y +z.
Dropping the second digit gives value as 100x + z.
So, 1000x + 100y + z = 7(100x + z).
Or, 150x + 50y = 3z.
Since 50 is common on the left, and z is 2 digits, let z=50.
Then 3x + y = 3.
Since x is not zero, let us assume x=1, then y=0.
So the number is 1050.

Click     www.TheMathWebSite.com     and put a weekly
puzzle, amusement, enrichment or challenge question
like this one on your school's website!

Leaflets

An advertizing company had 3000 leaflets printed.
The executive in charge could not remember how many they mailed last year. However, she did remember that there was always one over when she divided the number of leaflets mailed, by any number from 2 through 9.
How many leaflets were mailed last year?

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puzzle, amusement, enrichment or challenge question
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Five Kids

Matilda has 5 kids, with a girl in the middle.
They are all spaced 2 years apart.
The youngest boy is just half as old as the oldest.
How old is the girl?

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puzzle, amusement, enrichment or challenge question
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Friday, April 01, 2005

Three Guys

Doug, Ken and Joe are partners.
One has a beard.
Two are married.
Two have blue eyes.
Two are clean-shaven.
The bearded one has brown eyes.
Doug's wife is Ken's sister.
The bachelor has the same colour eyes as Joe.
Who has the beard?

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puzzle, amusement, enrichment or challenge question
like this one on your school's website!

Fence

Doug put up a fence at the end of the lawn.
He planned to have the posts 5 feet apart.
He found that he was 4 posts short.
So he had to place the posts 7 feet apart to do the job.
How long was his fence to be?

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puzzle, amusement, enrichment or challenge question
like this one on your school's website!

Lumberjack

Said a feller out felling a tree,
"My age I've divided by three.
The result is a square,
Yet my age, I declare,
Is six times a cube. Glory be!"

Click     www.TheMathWebSite.com     and put a weekly
puzzle, amusement, enrichment or challenge question
like this one on your school's website!