The Math Forum - Math Library - Number Theory

Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Problems Library

Browse the Library
Home : Math Topics : Number Theory

_____________________________________
Library Home || Primary || Math Fundamentals || Pre-Algebra ||
Algebra || Geometry || Discrete Math || Trig/Calc
_____________________________________

(membership required) || Become a Member || Learn about Membership
_____________________________________


  Subcategories   (see also All Sites in this category)
 
  All Sites - 32 items found, showing 1 to 32

  1. Can You Find My Numbers? - Roya Salehi
    Pre-Algebra, difficulty level 3. I have eight numbers in my list. Use the clues to find my numbers. ...more>>

  2. Coding Conundrums - Mary DeYoung & class
    Pre-Algebra, difficulty level 2. Explore encoding and decoding in this cipher puzzle. ...more>>

  3. The Continued Fraction - Ethel Breuche
    Algebra, difficulty level 4. Find the value of a given continued fraction. ...more>>

  4. Counting Chicken Wings - Annie Fetter, Suzanne Alejandre
    Pre-Algebra, difficulty level 3. Figure out how many wings are in the Biggest Bucket O' Wings. ...more>>

  5. Count to Ten? - Leigh Nataro
    Trig/Calc, difficulty level 3. Use the given clues to determine the base system for counting used by people of the planet Torus. ...more>>

  6. Count Your Seinneps - Leigh Nataro
    Trig/Calc, difficulty level 2. Find a system of coins that uses the fewest number of coins possible without repeating coins. ...more>>

  7. Fall Festival Frolic - Judy Ann Brown
    Pre-Algebra, difficulty level 3. How many different types of candy are needed to make at least 50 different treat bags? ...more>>

  8. Falling into Sequences - Judy Ann Brown
    Pre-Algebra, difficulty level 3. Find the 20th term in a sequence using both a recursive method and an explicit formula. ...more>>

  9. How Old is Ms. Nelson? - Judy Ann Brown
    Pre-Algebra, difficulty level 2. Ms. Nelson claims that she is three times as old as her little sister. However, six years ago she was five times as old as her sister was. How old is Ms. Nelson? ...more>>

  10. An Interesting Integer - Judy Ann Brown
    Pre-Algebra, difficulty level 2. I'm thinking of a particular integer. It is a multiple of three, five, and seven. No digit occurs more than once. Can you find my number? ...more>>

  11. Kate's Combination - Suzanne Alejandre
    Pre-Algebra, difficulty level 2. Find Kate's locker combination using mathematical clues. Is there more than one possibility? ...more>>

  12. Let Me Guess Your Number - Leigh Nataro
    Trig/Calc, difficulty level 3. Discover the patterns behind a number puzzle. ...more>>

  13. Lost in Des Moines - Judy Ann Brown
    Pre-Algebra, difficulty level 2. Calculate the speed of a car using given information. ...more>>

  14. Lucky Lollipops - Suzanne Alejandre & Maria Fung and her students
    Pre-Algebra, difficulty level 3. Find the number of lollipops Logan the Leprechaun gives away using his "lucky" method. ...more>>

  15. The Magic of Number 6174 - Suzanne Alejandre
    Pre-Algebra, difficulty level 4. Have fun exploring this number magic. ...more>>

  16. Making Money - Alice Miller
    Pre-Algebra, difficulty level 3. How much money would you have by December 31, 1999, if you put 10 cents in the special "math" bank on January 1, 1999? ...more>>

  17. Milk Madness - Suzanne Alejandre
    Pre-Algebra, difficulty level 4. Help Georgina find out how much milk is left using the number pattern she describes. ...more>>

  18. The Name Game - Judy Ann Brown
    Pre-Algebra, difficulty level 3. The first student says his/her own name; the second student repeats the first student's name and adds his/her own name... How many names are said if the numbers of students in my math classes on the first day are 27, ...more>>

  19. Odds vs. Evens - Kristina Lasher
    Math Fundamentals, difficulty level 3. Can Jerome and Kiya use what they know about probability to make their games fair? ...more>>

  20. Open and Shut Case - Judy Ann Brown
    Pre-Algebra, difficulty level 2. Find the locker combination using mathematical clues. ...more>>

  21. Palindrome Day - Judy Ann Brown
    Pre-Algebra, difficulty level 2. How many Palindrome Days are there in a year? ...more>>

  22. Prime Probability - Lisa Lavelle
    Pre-Algebra, difficulty level 3. Given the expression n^2 - 5, what is the probability that the result is prime for integers between 2 and 12? ...more>>

  23. Pythagoras and Y2K - Terry Trotter
    Algebra, difficulty level 4. Find Pythagorean triples for which this special year, Y2K (2000), is one of the three numbers in the triple. ...more>>

  24. Rampaging Reindeer - Judy Ann Brown
    Pre-Algebra, difficulty level 3. How many different ways can Santa's reindeer be arranged? ...more>>

  25. Roses, Roses, Roses - Larry Sue
    Discrete Math, difficulty level 1. Bob must bring his girlfriend roses to say he's sorry. Explore some of the ramifications of combining modular arithmetic and interpersonal relationships. ...more>>

  26. Runsums, Part 1 - Ron Knott
    Pre-Algebra, difficulty level 3. By spotting the pattern, tell me the smallest number that is a sum of a run of one hundred consecutive numbers. ...more>>

  27. Runsums, Part 2 - Ron Knott
    Pre-Algebra, difficulty level 3. Explore number patterns and report on what you have learned. ...more>>

  28. Seating Dilemma - Judy Ann Brown
    Pre-Algebra, difficulty level 2. Count the number of ways to seat people, if some are math teachers who cannot be next to each other. ...more>>

  29. Snow Day Phone Chain - Judy Ann Brown
    Pre-Algebra, difficulty level 4. Use the given information to find out how many phone calls were made. ...more>>

  30. Tiling Tables - Suzanne Alejandre
    Pre-Algebra, difficulty level 3. Find a method to quickly calculate the dimensions of a rectangular table top with a given area so that it has the smallest possible perimeter. ...more>>

  31. Treasure Hunt Math - Judy Ann Brown
    Pre-Algebra, difficulty level 3. Use clues to find the mystery palindrome. ...more>>

  32. Triangular Number Identities - Terry Trotter
    Algebra, difficulty level 3. Prove two famous theorems of ancient number theory: the sum of any two consecutive triangular numbers is a square number, and the product of 8 and any triangular number, increased by 1, is a square number. ...more>>


 
Page:  1


[Privacy Policy] [Terms of Use]

_____________________________________
Home || The Math Library || Quick Reference || Search || Help
_____________________________________

© 1994-2012 Drexel University. All rights reserved.
http://mathforum.org/
The Math Forum is a research and educational enterprise of the Drexel University School of Education.The Math Forum is a research and educational enterprise of the Drexel University School of Education.