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Addition (+): The symbol "+" for addition is believed to have originated from Latin. It is an abbreviation of the Latin word "et," which means "and." Over time, this abbreviation evolved into the plus sign we use today.
Subtraction (-): The symbol "-" for subtraction is derived from the Latin word "minus," which means "less" or "subtract." It was introduced by the German mathematician Johannes Widmann in the 15th century.
Multiplication (×): The symbol "×" for multiplication is a cross-like symbol, and its use can be traced back to William Oughtred, an English mathematician, and inventor of the slide rule. He introduced this symbol in his work "Clavis Mathematicae" published in 1631.
Division (÷): The symbol "÷" for division is thought to have been introduced by Johann Rahn, a Swiss mathematician, in his book "Teutsche Algebra" published in 1659. The division sign is often used as an obelus (a symbol representing division) and looks like a horizontal line with dots above and below.