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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 of our previous contests are available for free online as previous tests.


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 - cb = db
 - /  + +  /
ea /  a =  d
 = =  = =  =
da - ca = eb
What is This? | How to Solve It?

Yesterday's Solution

 14 × 182 = 2548
  + ×   / /    /
182 /  13 =   14
  = =   = =    =
196 -  14 =  182