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May questions

Last Math Mania for 2007-08 school year

Ms. Math Mania Amy Ruzicka is going on summer vacation just like St. Louis area school students. Thus, these Math Mania questions will be the final ones for the 2007-08 school year.

These final questions call for you to use a series of clues to figure out "mystery number" for each puzzle.

Ms. Ruzicka suggests that you brush up on your math vocabulary and review divisibility rules. She suggests you might like to think of several possible answers.

But, before you narrow your answers, make sure that number is supported by all of the clues. If one of the clues doesn't fit, it's likely you haven't got the correct number.

When you've got your answers, fill out the attached entry form. Make sure you fill in an answer for each of the five puzzles.

As with the other puzzles for this school year, YSL.com checks all entries to see if anyone gets them all correct. Depending on how many entries are all correct, YSL.com will award up to five $10 Borders gift certificates.

The Math Mania competition is open to kids 8 to 13 years of age from the metro area.

In the June edition of YSL.com, we'll publish the May answers along with the names of any kids who got all the answers correct.

How to enter:

  1. Print out the following entry form.
  2. Fill out your name, address and telephone number.
  3. Answer all five of the May Logic Puzzles.
  4. Put your completed entry into a stamped, addressed evvelope.
  5. Be sure to print the entry form so we can be sure of spelling.
  6. Mail the entry to:

Math Mania Contest
Young Saint Louis.com
813 Rotherham Dr.
Ballwin, Mo. 63011

(All entries must be postmarked by the
15th of the month to be eligible.)

-----------------------Clip here to make entry form-----------------------

Entry for May 2008, Math Mania Contest:

Name: __________________________________ Age: _____

Address: _________________________ School: ___________

City: _____________________ State: ______ Zip: __________

Contact phone: (_____) _____________________

 

May Math Mania Challenge:
Number Logic Puzzles

Use the following clues to figure out the mystery number.

HELPFUL HINTS:
 Before beginning, you may want to brush up on your math vocabulary and divisibility rules!

You may want to list possible solutions and make eliminations as you read through the clues.

Once you think you have solved a puzzle, check your number against ALL of the clues.

Puzzle 1:

  1. It is a three-digit whole number.
  2. Its tens digit is 5.
  3. It is divisible by 4.
  4. It is divisible by 9.
  5. Each of its digits is different.

Answer: ___________

Puzzle 2:

  1. It is a three-digit whole number.
  2. It is an odd number.
  3. One of its digits is 7.
  4. It is divisible by 5.
  5. It is less than 700.
  6. It has no even digits.
  7. It is divisible by 3.

Answer: ___________

Puzzle 3:

  1. It is a three-digit whole number.
  2. Its ones digit is the product of its hundreds digit and its tens digit.
  3. It is an even number.
  4. It has one odd digit.
  5. Its hundreds digit is 4 less than its ones digit.

Answer: ___________

Puzzle 4:

  1. It is a three-digit whole number.
  2. It is a prime number.
  3. It is less than 200.
  4. Each of its digits is different.
  5. The sum of its digits is 13.
  6. Its tens digit is greater than its ones digit.

Answer: ___________

Puzzle 5:

  1. It is a five-digit whole number.
  2. It is a palindrome.
  3. It has two digits that are 0's.
  4. It is divisible by 5.
  5. It is divisible by 9.

Answer: ___________

 

 

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