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why does this calculator NOT use PEMDAS? 6 / 2(1+2) = 1, NOT 9.

Guest Apr 26, 2017
 #1
avatar+7324 
+4

6 / 2(1+2)    is     \(\frac62(1+2)\)

 

and

 

\(\frac62(1+2)=3(1+2)=3(3)=9\)

 

Does that help? smiley

 

*edit*

If you want \(\frac{6}{2(1+2)}\)

 

You have to type it like this: 6/(2(1+2)) ...which DOES = 1

hectictar  Apr 26, 2017
edited by hectictar  Apr 26, 2017
 #2
avatar+90056 
+3

 6 / 2(1+2)

 

By the order of operations......the division  of 6 / 2    occurs first.....= 3

 

So

 

3 ( 1 + 2)   =

 

3 ( 3)   = 9

 

 

But

 

6 / [  2 ( 1 + 2) ]   =

 

6 /  [  2 (3) ]  =

 

6 / 6  =   

 

1

 

 

This points up the importance of parentheses.............and the lack of their use often changes the nature of the problem.....!!!!!!

 

 

 

cool cool cool

CPhill  Apr 26, 2017
 #3
avatar+93691 
+1

Put more simply:

 

The calculator is correct  

Melody  Apr 27, 2017

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