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Whole numbers involve four operations, mainly addition, subtraction, multiplication and division.
The symbol “+” (plus) is used for addition. It comes from the Latin word, “et”, which means “and”. Minus is the name for the symbol “-“, which means “less” in Latin.
It is used for subtraction. The symbol for multiplication “x” is known as the St. Andrew’s Cross. The division sign “÷”, probably came from the bar line of a fraction.
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