Basic Operations

Addition (+): Adding two or more numbers to get a sum.
Subtraction (-): Finding the difference between two numbers.
Multiplication (×): Repeated addition of a number.
Division (÷): Dividing a number into equal parts or finding how many times one number fits into another.

Features of operations
Exchange property:
Increase:
a + b = b + a
multiplication:
a × b = b × a
Associative Property:
Increase:
(a+b)+c=a+(b+c)
multiplication:
(a×b)×c=a×(b×c)
Distributive property:
a×(b+c)=a×b+