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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. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for arithmetic operations ...
This image is a derivative work of the following images: File:Hexidecimal_Multiplication_Table.png licensed with Cc-by-sa-3.0-migrated-with-disclaimers, GFDL-en 2007-09-29T22:22:05Z Sopoforic 561x561 (6883 Bytes) optimized with optipng; 2006-09-26T13:23:56Z Reignerok 561x561 (25903 Bytes) I fix some errors
multiplication table to scale: Image title: Multiplication table from 1 to 10 drawn to scale with the upper-right half labeled with prime factorisations by CMG Lee. In the SVG file, hover over or click a product to highlight it. Width: 100%: Height: 100%
36 represented in chisanbop, where four fingers and a thumb are touching the table and the rest of the digits are raised. The three fingers on the left hand represent 10+10+10 = 30; the thumb and one finger on the right hand represent 5+1=6. Counting from 1 to 20 in Chisanbop. Each finger has a value of one, while the thumb has a value of five.
Multiplication by a positive number preserves the order: For a > 0, if b > c, then ab > ac. Multiplication by a negative number reverses the order: For a < 0, if b > c, then ab < ac. The complex numbers do not have an ordering that is compatible with both addition and multiplication. [30]
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.
The Ready-Reckoner, or Farmer’s Complete Table; Aberystwyth, 19th century A ready reckoner is a printed book or table containing pre-calculated values, often multiples of given amounts. They were widely used in shops and by tradesmen before the advent of cheap electronic calculators , metric weights and measures and decimal currencies in the ...
For example, the range 1 to 10 is a single decade, and the range from 10 to 100 is another decade. Thus, single-decade scales (named C and D) range from 1 to 10 across the entire length of the slide rule, while double-decade scales (named A and B) range from 1 to 100 over the length of the slide rule.
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