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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    Multiplication table. 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 ...

  3. Chinese multiplication table - Wikipedia

    en.wikipedia.org/wiki/Chinese_multiplication_table

    It is also known as nine-nine song (or poem), [2] as the table consists of eighty-one lines with four or five Chinese characters per lines; this thus created a constant metre and render the multiplication table as a poem. For example, 9 × 9 = 81 would be rendered as "九九八十一", or "nine nine eighty one", with the world for "begets" "得 ...

  4. Vedic square - Wikipedia

    en.wikipedia.org/wiki/Vedic_square

    Vedic square. In Indian mathematics, a Vedic square is a variation on a typical 9 × 9 multiplication table where the entry in each cell is the digital root of the product of the column and row headings i.e. the remainder when the product of the row and column headings is divided by 9 (with remainder 0 represented by 9).

  5. Numbered musical notation - Wikipedia

    en.wikipedia.org/wiki/Numbered_musical_notation

    The numbered musical notation (simplified Chinese: 简谱; traditional Chinese: 簡譜; pinyin: jiǎnpǔ; lit. 'simplified notation', not to be confused with the integer notation) is a cipher notation system used in Mainland China, Taiwan, Hong Kong, and to some extent in Japan, Indonesia (in a slightly different format called "not angka"), Malaysia, Australia, Ireland, the United Kingdom ...

  6. Culture of the Song dynasty - Wikipedia

    en.wikipedia.org/wiki/Culture_of_the_Song_Dynasty

    Chinese literature during the Song period contained a range of many different genres and was enriched by the social complexity of the period. Although the earlier Tang dynasty is viewed as the zenith era for Chinese poetry (particularly the shi style poetry of Du Fu, Li Bai, Bai Juyi), there were important poetic developments by famous poets of the Song era, with the flourishing of the ci form ...

  7. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    This sum can also be found in the four outer numbers clockwise from the corners (3+8+14+9) and likewise the four counter-clockwise (the locations of four queens in the two solutions of the 4 queens puzzle [50]), the two sets of four symmetrical numbers (2+8+9+15 and 3+5+12+14), the sum of the middle two entries of the two outer columns and rows ...

  8. Science and technology of the Song dynasty - Wikipedia

    en.wikipedia.org/wiki/Science_and_technology_of...

    By era. v. t. e. The Song dynasty (Chinese: 宋朝; 960–1279 CE) witnessed many substantial scientific and technological advances in Chinese history. Some of these advances and innovations were the products of talented statesmen and scholar-officials drafted by the government through imperial examinations. Shen Kuo (1031–1095), author of ...

  9. Casting out nines - Wikipedia

    en.wikipedia.org/wiki/Casting_out_nines

    Let us look at a simple multiplication: 5 × 7 = 35, (3 + 5 = 8). Now consider (7 + 9) × 5 = 16 × 5 = 80, (8 + 0 = 8) or 7 × (9 + 5) = 7 × 14 = 98, (9 + 8 = 17), (1 + 7 = 8). Any non-negative integer can be written as 9×n + a, where 'a' is a single digit from 0 to 8, and 'n' is some non-negative integer. Thus, using the distributive rule ...

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