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Arithmetic Examples of arithmetic | Reference | Navigation menuArticle on Arithmetic from Encyclopedia Britannicaadding to it

Arithmetics


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Arithmetic




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Arithmetic is a name for working with numbers. It is a part of mathematics. The four basic arithmetic operations are addition, subtraction, multiplication, and division.


Harder arithmetic includes working with signed numbers, fractions, and decimals, and taking powers and roots.


Most people learn arithmetic in primary school, but some people do not learn arithmetic and others forget the arithmetic they learned. Many jobs require a knowledge of arithmetic, and many employers complain that it is hard to find people who know enough arithmetic. A few of the many jobs that require arithmetic include carpenters, plumbers, auto mechanics, accountants, architects, doctors, and nurses. Arithmetic is needed in all areas of mathematics, science, and engineering.


A calculator can be used to do arithmetic. Computers can do it more quickly, which is one reason Global Positioning System receivers have a small computer inside.



Examples of arithmetic |


  • 2 + 3 = 5 (adding is commutative: 2 + 3 is the same as 3 + 2)
  • 7 − 5 = 2 (subtracting is not commutative: 7 − 5 is different from 5 − 7)
  • 3 × 4 = 12 (multiplying is commutative: 3 × 4 is the same as 4 × 3)
  • 6 ÷ 2 = 3 (dividing is not commutative: 6 ÷ 2 is different from 2 ÷ 6)


Reference |


  • Article on Arithmetic from Encyclopedia Britannica








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