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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   The oldest known multiplication tables were used by the Babylonians about 4000 years ago. [2] However, they used a base of 60. [2] The oldest known tables using a base of 10 are the Chinese decimal multiplication table on bamboo strips dating to about 305 BC, during China's Warring States period. [2] "Table of Pythagoras" on Napier's bones [3]

3. Suanpan - Wikipedia

   en.wikipedia.org/wiki/Suanpan

   They are essential (compulsory) in some of the multiplication methods (two of three methods require them) and division method (special division table, Qiuchu 九歸, one amongst three methods). When the intermediate result (in multiplication and division) is larger than 15 (fifteen), the second (extra) upper bead is moved halfway to represent ...

4. 16 Divisions - Wikipedia

   en.wikipedia.org/wiki/16_Divisions

   The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.

5. AOL

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   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

6. Division (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Division_(mathematics)

   In abstract algebra, given a magma with binary operation ∗ (which could nominally be termed multiplication), left division of b by a (written a \ b) is typically defined as the solution x to the equation a ∗ x = b, if this exists and is unique. Similarly, right division of b by a (written b / a) is the solution y to the equation y ∗ a = b ...

7. List of Dewey Decimal classes - Wikipedia

   en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

   642 Meals and table service; 643 Housing and household equipment; 644 Household utilities; 645 Household furnishings; 646 Sewing, clothing, management of personal and family life; 647 Management of public households (Institutional housekeeping) 648 Housekeeping; 649 Child rearing; home care of people with disabilities and illnesses; 650 ...