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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   Multiplication table from 1 to 10 drawn to scale with the upper-right half labeled with prime factorisations. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system.

3. Mathematical table - Wikipedia

   en.wikipedia.org/wiki/Mathematical_table

   The first tables of trigonometric functions known to be made were by Hipparchus (c.190 – c.120 BCE) and Menelaus (c.70–140 CE), but both have been lost. Along with the surviving table of Ptolemy (c. 90 – c.168 CE), they were all tables of chords and not of half-chords, that is, the sine function. [1]

4. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Multiplication is a mathematical operation of repeated addition. When two numbers are multiplied, the resulting value is a product. The numbers being multiplied are multiplicands, multipliers, or factors. Multiplication can be expressed as "five times three equals fifteen", "five times three is fifteen" or "fifteen is the product of five and ...

5. Slonimski's Theorem - Wikipedia

   en.wikipedia.org/wiki/Slonimski's_Theorem

   Slonimski's Theorem is an observation by Hayyim Selig Slonimski that the sequence of carry digits in a multiplication table is the Farey sequence. This observation allowed Slonimski to create very compact multiplication tables for use in hand calculations. He received several awards for different devices for presenting these tables.

6. Pee-Chee folder - Wikipedia

   en.wikipedia.org/wiki/Pee-Chee_folder

   The pockets are printed with a variety of reference information including factors for converting between English and metric measurement units, and a multiplication table. [ 1 ] [ 2 ] The folders had fallen out of general use by the 2000s, [ 3 ] but are available from Mead as of 2014 [update] .

7. Napier's bones - Wikipedia

   en.wikipedia.org/wiki/Napier's_bones

   Using the multiplication tables embedded in the rods, multiplication can be reduced to addition operations and division to subtractions. Advanced use of the rods can extract square roots. Napier's bones are not the same as logarithms, with which Napier's name is also associated, but are based on dissected multiplication tables.