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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]
Games magazine included Facts in Five in their "Top 100 Games" for 1980 and 1982, saying that "you can devise your own trivia games, but you won't come up with something as well put together as Facts In Five" [3] and describing the changing combinations of categories and letters as an "endlessly absorbing" challenge. [4]
Area of a cloth 4.5m × 2.5m = 11.25m 2; 4 1 / 2 × 2 1 / 2 = 11 1 / 4 Multiplication (often denoted by the cross symbol × , by the mid-line dot operator ⋅ , by juxtaposition, or, on computers, by an asterisk * ) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition ...
The following tables exhibit addition and multiplication among the first 16 nimbers. This subset is closed under both operations, since 16 is of the form 2 2 n. (If you prefer simple text tables, they are . Nimber addition (sequence A003987 in the OEIS) This is also the Cayley table of Z 2 4 – or the table of bitwise XOR operations.
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.
In mathematics education, there was a debate on the issue of whether the operation of multiplication should be taught as being a form of repeated addition.Participants in the debate brought up multiple perspectives, including axioms of arithmetic, pedagogy, learning and instructional design, history of mathematics, philosophy of mathematics, and computer-based mathematics.