Subtraction in Mathematics

                        

                The beauty of Mathematics depends on basic four arithmetic Operations along with some functional operation:-

1. Addition  ( + )
2. Subtraction ( - )
3. Multiplication  ( x )
4. Division (÷)                                                                                                                                            so we shall discuss second operation subtraction.

SUBTRACTION

                          Generally, - ( Read as "MINUS " ) symbol is used from ancient times. The subtraction is written using the MINUS "-" between the terms; that is, symbolically. The result is expressed with equals " = " symbols.

it is a basic arithmetic operation of removing/ deleting objects from a given object. The result of subtraction is also called a difference.

Subtraction can be learned as follows:-

If we consider a general example that we have three mangoes and one have rotten then remaining mangoes are such as

3 - 1 = 2 is read as (" Three minus one equals TWO")

If in ANOTHER way that we have three mangoes and ALL have rotten then remaining mangoes are such as

3 - 3 = 0 is read as (" Three minus three equals ZERO")

BY SUBTRACTING SAME NUMBERS ZERO ( 0)

0 - 0 = ...? we have nothing/nil objects so our answer is also No objects so Zero it  is read as (" zero minus ZERO equals ZERO")
1 - 0 = 1 is read as(" one minus ZERO equals ONE")
2 - 0 = 2 is read as(" Two minus ZERO equals TWO")
3 - 0 = 3 ...???? ( obvious answer is 3 ) is read as(" Three minus ZERO equals THREE")
4 - 0 = 4 is read as (" Four minus ZERO equals FOUR")
5 - 0 = ...???? ( obvious answer is 5 )is read as (" Five minus ZERO equals FIVE")
6 - 0 = 6 is read as(" Six minus ZERO equals SIX")
....

Since the subtraction of zero in any numbers, results are similar to the number so ZERO is known as SUBTRACTIVE IDENTITY.

BY SUBTRACTING SAME NUMBERS ONE (1)

• 1 - 1 = 0  is read as(" One minus one equals ZERO")
  
  2 - 1 = 1  is read as(" Two minus one equals ONE")
  
  3 - 1 = 2  is read as(" Three minus one equals TWO")
  
  4 - 1 = 3  is read as(" Four minus one equals THREE")
  
  5 - 1 = 4  is read as(" Five minus one equals FOUR")
  
  6 - 1 = 5 is read as (" Eight minus one equals FIVE ")
  
  7 - 1 = 6 is read as(" Seven minus one equals SIX")
  
  ...

• BY SUBTRACTING DIFFERENT NUMBERS

• 7 - 4 = 3is read as (" SEVEN minus FOUR equals THREE")
  
  THIS CAN BE ALSO WRITTEN AS
  7 

          - 4 ___

       3__



The numbers or the objects ( Like Pencils, Pens, Fruits, etc ) to be subtracted in general subtraction are collectively referred to as the terms, the differences.

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