Arithmetic
From Wikipedia, the free encyclopedia
Arithmetic is what we call 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 grade 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, doctors, and nurses. Arithmetic is needed in all areas of mathematics, science, and engineering.
Calculators are used to do arithmetic, but if a person needs a calculator to do simple arithmetic, like 2 + 2 = 4, then they will be too slow trying to do arithmetic on the job, just as a person who needs to look up the spelling of a word like "cat" in the dictionary will be too slow to write on the job. A skilled worker[1] has to have a very good knowledge of arithmetic and the English language in order to earn the right salary.
[change] Examples of arithmetic
- 2 + 2 = 4
- 7 - 5 = 2
- 3 * 4 = 12
- 6 / 2 = 3
- 3 ^ 2 = 9
