Find us on Youtube  Find us on Daily Motion  Find us on Twitter  Find us on Facebook  
Sign In
Contact Us

Caribou News

About Caribou

The Caribou Mathematics Competition is a world wide online contest that is held six times throughout the school year. Each of these days, five contests are offered, one for each of the grade levels 3/4, 5/6, 7/8, 9/10 and 11/12 and each one in English, French and Persian.

The Caribou Cup is the series of all Caribou Contests in one school year. Each student's ranking in the Caribou Cup is determined by their performance in their best 5 of 6 contests through the school year.

All support materials (written solutions, current year and previous years contests as online practise tests, online math and logic games, online mini courses) are also available without contest participation. Many of them are free.


Join participants from all over the world. Your contact person (teacher, librarian, home school organizer) can upload pictures to the gallery after signing in.


The goals of this project are to:

Upcoming Contests

There are currently no upcoming contests scheduled.

Please check back later. The schedule of contests for the upcoming school year will be released early September.


Details for participation and fees can be found here.


Cash prizes are given out to the top performing students and schools in the Caribou Cup. Additionally, contest and Caribou Cup certificates can be printed after each test is marked. More information regarding prizes and a sample certificate can be found here.

Calcrostic of the Day

Calcrostics are a trademark in a Caribou Contest - one appears in nearly every contest.

Today's Calcrostic Puzzle

ab × cd = bea
 + ×  / /   -
cf ×  g = cbh
 = =  = =   =
bg ×  b = aad
What is This? | How to Solve It?

Yesterday's Solution

304 / 2 = 152
  + / × ×   -
304 / 4 =  76
  = = = =   =
608 / 8 =  76