In mathematics, arithmetic is the basic study of numbers. The four basic arithmetic operations are addition, subtraction, multiplication, and division, although other operations such as exponentiation and roots are also studied in arithmetic.
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, mechanics, accountants, architects, doctors, and nurses. Arithmetic is needed in all areas of mathematics, science, and engineering.
Some arithmetic can be carried out mentally. A calculator can also be used to perform arithmetic. Computers can do it more quickly, which is one reason Global Positioning System receivers have a small computer inside.
Examples of arithmetic[change | change source]
- 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
Related pages[change | change source]
References[change | change source]
- "List of Arithmetic and Common Math Symbols". Math Vault. 2020-03-17. Retrieved 2020-08-25.
- "Definition of Arithmetic". www.mathsisfun.com. Retrieved 2020-08-25.
- "Arithmetic". Encyclopedia Britannica. Retrieved 2020-08-25.