Maths
Operations and Inverse Operations
The
Four Basic Maths Operations 
Inverse
Operations 


Addition 
Addition
is commutative
the order does not matter
2 + 3 = 5 and 3 + 2 = 5 
Result
= Sum 
Inverse
of + is  
6
+ 4 = 10
10  4 = 6 


Subtraction 
The
order does matter
5  3 = 2 but 3  5 = 2 
Inverse
of  is + 
8
 3 = 5
5 + 3 = 8 


Multiplication 
Multiplication
is commutative
the order does not matter
4 x 5 = 20 and 5 x 4 = 20 
Result
= Product 
Inverse
of x is / 
3
x 2 = 6
6 / 2 = 3 


Division 
The
order does matter
10 / 2 = 5 but 2 / 10 = 1 / 5 
Inverse
of / is x 
12
/ 4 = 3
3 x 4 = 12 
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