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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    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] The multiplication table is sometimes attributed to the ancient Greek mathematician Pythagoras (570–495 BC).

  3. Ternary numeral system - Wikipedia

    en.wikipedia.org/wiki/Ternary_numeral_system

    A ternary / ˈ t ɜːr n ər i / numeral system (also called base 3 or trinary [1]) has three as its base.Analogous to a bit, a ternary digit is a trit (trinary digit).One trit is equivalent to log 2 3 (about 1.58496) bits of information.

  4. Napier's bones - Wikipedia

    en.wikipedia.org/wiki/Napier's_bones

    The simplest sort of multiplication, a number with multiple digits by a number with a single digit, is done by placing rods representing the multi-digit number in the frame against the left edge. The answer is read off the row corresponding to the single-digit number which is marked on the left of the frame, with a small amount of addition ...

  5. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    Toggle the table of contents. ... The product of 2 and 3 is 6, and the carry digit adds 2 to 6, so 8 is written under the tens column. ... Example of multiplication ...

  6. Balanced ternary - Wikipedia

    en.wikipedia.org/wiki/Balanced_ternary

    Balanced ternary is a ternary numeral system (i.e. base 3 with three digits) that uses a balanced signed-digit representation of the integers in which the digits have the values −1, 0, and 1.

  7. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    For instance, if the number π is rounded to 4 decimal places, the result is 3.142 because the following digit is a 5, so 3.142 is closer to π than 3.141. [107] These methods allow computers to efficiently perform approximate calculations on real numbers. [108]

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