Posted by Shadow on Friday, April 22, 2011 at 9:40pm.
What is the answer to this question?
48÷2(9+3)=
( If I do it with PEMDAS, the answer would be 2, but when I type in google, it give me 288)
[ 9+3 = 12 > 48/2(12) > 2 x 12 = 24 > 48/24 = 2]

Math  MathMate, Friday, April 22, 2011 at 9:57pm
Google is right!
PEMDAS works like this:
1. Parentheses
2. Exponential
3. Multiplications and Divisions
4. Additions and subtractions.
BUT when multiplications and divisions are both present without parentheses, they are executed from left to right.
The same rule applies when we have additions and subtractions.
So
48÷2(9+3)
=48÷2*12
=24*12
=288
Compare with
62+3
=4+3
=7

Math  Shadow, Friday, April 22, 2011 at 10:05pm
Thanks

Math :)  MathMate, Friday, April 22, 2011 at 10:56pm
You're welcome!
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