Coins,
cider and rabbits
in November Math Puzzlers
Mr. Math Puzzler
has designed the November puzzles using all sorts of different
objects. They include coins, cider, mythical "math rabbits"
and the make-believe cities of Factorville and Divisorton.
.
But, don't be
fooled. The object of his Math Puzzlers remains the same.
He wants you to have fun with math while joining in a competition
with other St. Louis area kids.
The students of
St. Gabriel School in the City of St. Louis did a good job
of answering the October puzzlers. Nine of them got all six
of the October puzzles correct. That's the biggest number
of winners in the history of Math Puzzlers.
(To read about
the winners and get answers for October questions, click
here.)
Before you try
to answer the November questions, why don't you check some
of the past questions and answers. That will help you to learn
how Mr. Math Puzzler thinks.
Young Saint
Louis.com started the Math Puzzlers over a year ago. To
check questions, go to the Past Stories tab at the
top of the home page. Click on any month since September,
2001, and you can check both questions and answers. (The answers
to one month's questions are available in the next month's
edition.)
Now, you're ready
to try your hand at the November questions.
If you get all
Puzzlers correct, YSL.com will print your name and
those of all other winners in the December, 2002, edition.
Remember, all winning entries also get a chance to win a $10
Borders gift certificate. We pick up to three winners for
the certificates.
A reminder:
These Math Puzzlers can be quite challenging, especially for
younger kids. Remember, we don't mind if you get help from
a parent or older brother or sister. In fact, you might want
to make this a family activity.
Here's how to
enter:
- Print out
the following entry form.
- Fill out your
name, address and telephone number.
- Give your
answers to the six Math Puzzlers.
- Put your completed
entry into a stamped envelope.
- Mail your
entry to:
Math
Puzzler Contest
Young
Saint Louis.com
7733
Forsyth Blvd., Suite 350
Clayton,
MO 63105
- All entries
must be postmarked by the 15th of the month
to be eligible for a book prize.
-------------Clip
here to make entry-------------
Entry
for November, 2002, Math Puzzler Contest:
Name: _____________________________________
Address: ___________________________________
City:_______________,
State:______ ZIP__________
Contact phone
no.(____)____________________
The
Math Puzzlers
(November, 2002)
1. You have an
equal number of pennies, nickels and dimes. If you have $1.60,
how many of each coin do you have?
Answer:_____________
2. If six students
can do 36 math problems in an hour and a half, how many math
problems can eight students do in an hour?
Answer:_____________
3. The following
multiplication example uses all the digits from 0 through
9, and Y's have been used to represent the numbers. Can you
find the problem that works? (Values that are "carried"
do not count as digits used.)
7YY
x YY
—————
YYYYY
Answer:_____________
4. The cost of
a liter of cider plus its liter container is 10 stickels.
The cider costs 4 stickels more than the liter container.
How much does one liter of cider cost?
Answer:______________
5. Math rabbits
are not like normal rabbits. They can only jump two distances:
5 feet or 7 feet, either straight forward or straight backward.
To reach an object 12 feet in front of it, a math rabbit would
take one 5-foot jump forward and then one 7-foot jump forward.
What is the fewest number of jumps (and what are they?) needed
for a math rabbit to reach a carrot that is 13 feet in front
of it?
Answer:______________
6. One-third,
one-fourth, one-fifth and one-seventh of the human population
of Factorville, which has fewer than 500 inhabitants, are
all whole numbers. The sum is exactly the population of Divisorton.
What is the human population of Divisorton?
Answer:______________