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2. Chisanbop - Wikipedia

   en.wikipedia.org/wiki/Chisanbop

   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.

3. Trachtenberg system - Wikipedia

   en.wikipedia.org/wiki/Trachtenberg_system

   The method for general multiplication is a method to achieve ... 2 Finger method. ... In this same way the tables for subtracting digits from 10 or 9 are to be ...

4. History of ancient numeral systems - Wikipedia

   en.wikipedia.org/wiki/History_of_ancient_numeral...

   [5] [6] While finger-counting is typically not something that preserves archaeologically, some prehistoric hand stencils have been interpreted as finger-counting since of the 32 possible patterns the fingers can produce, only five (the ones typically used in counting from one to five) are found at Cosquer Cave, France. [7]

5. Ancient Egyptian multiplication - Wikipedia

   en.wikipedia.org/.../Ancient_Egyptian_multiplication

   In mathematics, ancient Egyptian multiplication (also known as Egyptian multiplication, Ethiopian multiplication, Russian multiplication, or peasant multiplication), one of two multiplication methods used by scribes, is a systematic method for multiplying two numbers that does not require the multiplication table, only the ability to multiply and divide by 2, and to add.

6. Teenager may be first human ever to beat Nintendo’s Tetris

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7. Antibiotic use does not increase dementia risk, study suggests

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   Using antibiotics 1 to 5+ times. The researchers used Australian data from ASPREE (ASPirin in Reducing Events in the Elderly), a randomized trial of community-based older adults.. They identified ...

8. 3 money moves you can’t afford to skip before Trump takes office

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   Donald Trump will be assuming the office of U.S. president on Jan. 20, 2025, and his return to the role could usher in a wide variety of economic changes. Trump has promised to lower taxes, reduce ...

9. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/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 arithmetic operations ...