In numeral systems, digits are characters used to represent the value of numbers. An example of a numeral system is the predominantly used 展开

In elementary arithmetic, the successor of a natural number (including zero) is the next natural number and is the result of adding one to that number. The predecessor of a natural … 展开

Addition is a mathematical operation that combines two or more numbers (called addends or summands) to produce a combined number (called the sum). The addition of two numbers is expressed with the plus sign ($${\displaystyle +}$$). It is performed according to … 展开

Division is an arithmetic operation, and the inverse of multiplication. Given that $${\displaystyle c\times b=a}$$, ,
Division can be written as $${\displaystyle a\div b}$$, $${\displaystyle {\frac {a}{b}}}$$, or a⁄b. This can be read verbally as "a divided by b" or "a over b". 展开

Counting assigns a natural number to each object in a set, starting with 1 for the first object and increasing by 1 for each subsequent object. The number of objects in the set is the count. This is also known as the cardinality of the set.
Counting can also be the … 展开

Subtraction evaluates the difference between two numbers, where the minuend is the number being subtracted from, and the subtrahend is the number being subtracted. It is represented using the minus sign ($${\displaystyle -}$$). The minus sign is also used … 展开

Elementary arithmetic is typically taught at the primary or secondary school levels and is governed by local educational standards. In the United … 展开