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Mathematical Reasoning

 

Knowing Subtraction  Patterns
                                            can help you find the difference.

Let's Remember:
Subtraction is when you take away
from a total,
to make a new number.

 

  Examples:

                            Input Subtraction Machine
        Input           -                        =        Output

10              - 

=        6

   8              - 

=        4

6            -  

=        2

In order to get the answers we got in the Output,
the Input Machine must be -4

No matter what you put into this machine,
the answer (output) will always 4 LESS
than the Input.

This would be an example of a 
                  -4 Subtraction Pattern because:                                

10 - 4= 6         8 - 4= 4         6 - 4= 2


          


  Input Subtraction Machine
Input         -                       =       Output

15              - 

9

12              - 

6

9             - 

3

In order to get the answers we got in the Output here,
the Input Machine must be -6

No matter what you put into this machine,
the answer (output) will always 6 LESS
than the Input.

This would be an example of a 
                   -6 Subtraction Pattern because:                                

15 - 6= 9         12 - 6= 6         9 - 6= 3
          

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