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.
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)