The Last Thing You Thought...

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0+[50x1]-60-[60x0]-10=?
50-60-10
-10-10= -20

my head refuses to see how that's wrong
 
0+50x1-60-60x0+10

Order of operations says to do the multiplication first, so....

0 +(50x1)-60-(60x0)+10

this results in....

0+50-60-0+10

Forget about the zeros and you have....

50-60+10

Now if you go straight across you get....50-60=-10, then add 10 back and you get 0.

If you add the 60+10 part first, then subtract that total from 50, you get -20

I think you just go left to right, but I can't remember if there is an order of operations precedence between addition and subtraction.
 
0+50x1-60-60x0+10

Order of operations says to do the multiplication first, so....

0 +(50x1)-60-(60x0)+10

this results in....

0+50-60-0+10

Forget about the zeros and you have....

50-60+10

Now if you go straight across you get....50-60=-10, then add 10 back and you get 0.

If you add the 60+10 part first, then subtract that total from 50, you get -20

I think you just go left to right, but I can't remember if there is an order of operations precedence between addition and subtraction.


Waking up to this made me smile :)

* grins* do not think just do it. :):rose:

*hugs you * :rose:
 
0+50x1-60-60x0+10

Order of operations says to do the multiplication first, so....

0 +(50x1)-60-(60x0)+10

this results in....

0+50-60-0+10

Forget about the zeros and you have....

50-60+10

Now if you go straight across you get....50-60=-10, then add 10 back and you get 0.

If you add the 60+10 part first, then subtract that total from 50, you get -20

I think you just go left to right, but I can't remember if there is an order of operations precedence between addition and subtraction.

50-60+10

-10+10

0

In this case follow the order, left to right.

PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. Exception with the last four is Order. Order of left to right comes first)

*blink* I need coffee.
 
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