Primepak Card Game

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  • Item #: CM02001
  • Condition: New
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Price $14.95

by Conceptual Math Media Inc.

Ages 7 +
Grades 2+ 

Factor Thinking Games!

Master multiplication facts and divisibility rules while having fun playing card games with this unique deck of cards. In all four games players form factor sets.  Because 80 + 8 x 10, the numbers 80, 8, and 10 form a factor set.  Factor sets can have more than three numbers.  For example, the set 42, 3, 2, and 7 is also a factor set.  Prime wild cards are used for prime numbers only.

Six Deck Levels

The PrimePak deck of 171 cards adapts to many levels by removing certain cards.  Six deck levels are defined in the rules booklet.  Players play with deck level 1 (then 2 and 3) until they have mastered the multiplication facts.  They continue playing at level 3 until they learn to think of numbers in factored form.  The rules booklet includes important divisibility rules and factoring strategies.

Factor Sets
A factor set must contain a result and the numbers that multiply to give that result.  Prime wild cards are used for prime numbers only.  The prime numbers included in the full deck are 2, 3, 5, 7, 11, 13, 17 and 19.


Prime Challenge - Players in turn form factor sets from a 12-card (or 9-card) foundation.  Challenges are made by opponents when a player overlooks factor sets or makes a mistake.
Prime Solitaire - To win, a player must clear a foundation by forming factor sets.  This must be done before going through the draw pile once, one card at a time.
Factor Rummy - Holding a hand of 11 (or 10) cards, players try to be the first to fill their hand with factor sets.
Prime Canasta - A sophisticated Factor Rummy game.  For serious players.

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