
Open numbers on a chess board.
Mathematical games and puzzles.
At the end of this page there is the link on PDF file with images of numerical playing cards which are possible to download  to print  to play.

Proportional groups of numbers in this mathematical game:
1) 0 3 4 7 8 11 12 15 16 19 20 23 24 27 28 31 32 35
36 39 40 43 44 47 48 51 52 55 56 59 60 63 64 67 68 71 72 75 76 79 80 83 84 87 88 91 92 95 96 99
2) 1 2 5 6 9 10 13 14 17 18 21 22 25 26 29 30 33 34 37 38 41 42 45
46 49 50 53 54 57 58 61 62 65 66 69 70 73 74 77 78 81 82 85 86 89 90 93 94 97 98
Deck of numerical cards.
Playing chessboard. 
Description of gaming construction. Mathematical playing cards with numbers. The big version of the present mathematical game contains one deck
or complete set of 100 numerical playing cards with
numbers from 0 up to 99. One number is put on each card, but in the
direct and turned position that allows two players to read numerical
signs directly at arrangements opposite each other on different sides of a
chess game board. OCH1.PDF I hope that offered mathematical board game with numbers will be interesting! 

Offered numerical playing cards of the big version of desktop mathematical game can be used at schools on math lessons, or in summer camps for rest of kids, and also in children's clubs or centers of brain development with programs to enhance cognitive skills, or learning of children by playing cards as methodical manuals for training to rules of arithmetic actions and mathematical calculations. As numbers from 0 up to 99 on a chess board allow to study the multiplication table and math divisions, and also allow to train skills of many other arithmetic actions with digits, that as a result allows the teacher to develop not only logic thinking and mathematical abilities of children, but also enables by means of intellectual games and numerical puzzles to train memory and creative mentality of pupils.