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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   36 4 4: 8: 12: 16: 20: 24: 28: 32: 36: 40: 44: 48 5 ... multiplication table × 1 ichi 2 ... help children learn multiplication facts, including video-game style apps ...

3. Nimber - Wikipedia

   en.wikipedia.org/wiki/Nimber

   The following tables exhibit addition and multiplication among the first 16 nimbers. This subset is closed under both operations, since 16 is of the form 2 2 n. (If you prefer simple text tables, they are . Nimber addition (sequence A003987 in the OEIS) This is also the Cayley table of Z 2 4 – or the table of bitwise XOR operations.

4. 24 (puzzle) - Wikipedia

   en.wikipedia.org/wiki/24_(puzzle)

   The original version of 24 is played with an ordinary deck of playing cards with all the face cards removed. The aces are taken to have the value 1 and the basic game proceeds by having 4 cards dealt and the first player that can achieve the number 24 exactly using only allowed operations (addition, subtraction, multiplication, division, and parentheses) wins the hand.

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6. Bingo (British version) - Wikipedia

   en.wikipedia.org/wiki/Bingo_(British_version)

   The similar Tombola was used in nineteenth-century Germany as an educational tool to teach children multiplication tables, spelling, and even history. [3] Housey Housey cards and chips. The origins of the modern version of the game and its current name bingo are unclear. Early British slang records bingo as...

7. Taxman (mathematical game) - Wikipedia

   en.wikipedia.org/wiki/Taxman_(mathematical_game)

   The game is played between two players on a board consisting of whole numbered tokens labeled 1 through N, where N is any positive whole number. During each turn, one player (deemed the tax payer) takes a number from the board, and the other player (deemed the taxman) removes all remaining factors of the tax payer's number from the board.

8. Skip counting - Wikipedia

   en.wikipedia.org/wiki/Skip_counting

   Skip counting is a mathematics technique taught as a kind of multiplication in reform mathematics textbooks such as TERC. In older textbooks, this technique is called counting by twos (threes, fours, etc.). In skip counting by twos, a person can count to 10 by only naming every other even number: 2, 4, 6, 8, 10. [1]

9. Trachtenberg system - Wikipedia

   en.wikipedia.org/wiki/Trachtenberg_system

   The method for general multiplication is a method to achieve multiplications with low space complexity, i.e. as few temporary results as possible to be kept in memory. . This is achieved by noting that the final digit is completely determined by multiplying the last digit of the multiplic