There are four basic operators, which are used to work with numbers for uses besides counting. They are:

• ${\displaystyle +}$ addition
• ${\displaystyle -}$ subtraction
• ${\displaystyle \times }$ multiplication (The symbols * and ⋅ are also used to multiply)
• ${\displaystyle \div }$ division (The symbol / is also used to divide)

Addition

Addition is the total of two numbers. For example:

${\displaystyle 1+2=3}$

Subtraction

Subtraction is the opposite of addition, which is the taking away of one number from another. For example:

${\displaystyle 2-1=1}$

Multiplication

Multiplication is the adding of a number a certain number of times. So:

${\displaystyle 2*1=2}$

${\displaystyle 2*2=2+2=4}$

${\displaystyle 2*3=2+2+2=6}$ etc.

Division

Division is the splitting of a number into a number of equal parts. For example:

${\displaystyle 6/2=3}$