The four basic mathematical operations

The four basic mathematical operations are:
                                       
•    Addition               
•    Subtraction           
•    Multiplication      
•    Division      

Addition

Adding two (or more) numbers means to find their sum (or total).  The symbol used for addition is '+'.

Example:
Find the sum of 10 and 8.
Solution:
10+ 8 = 18

Subtraction

Subtracting one number from another number is to find the difference between them.  The symbol used for subtraction is '–'.

Example:
Subtract 11 from 16.
Solution:
16 – 11= 5

Multiplication

Multiplication means times (or repeated addition).  The symbol used for multiplication is '×'.

Example:
Calculate 9 × 9.
Solution:
9 × 9 = 81

Division

Division ‘undoes’ multiplication and involves a number called the dividend being 'divided' by another number called the divisor.  The symbol used for division is '÷'.

Example:
Calculate 45÷5.
Solution:
45÷5 = 9