HalsofIvy

[kai0ty]

yo man u seem really really smart. i was wondering if u dont mind me asking where did u go to school and what did u major in. i love math, its fascinating, and u seem to have a very in depth understanding of it so if u dont mind could u tell me? also i dont have a question. 2+2/2 wahts the answer 2 or 3? there are no parenthesis i know that would change it.

[brum]

2+2/2 = 2+1 = 3

Why? Order of operations.

here's a way to remember...
Please Excuse My Dear Aunt Sally
P=Parentheses
E=Exponents
M=Multiplication
D=Division
A=Addition
S=Subtraction

In other words, first solve brackets, then parentheses, then multiplication/division, then addition/subtraction last.


In the case of "2 + 2/2"...
First: Division (2/2)
Second: Addition (2+1)

Thus, 2+2/2 = 3

[HallsofIvy]

Actually, "Hals" is my cousin. I'm "Halls"!

[chroot]

Originally posted by HallsofIvy
Actually, "Hals" is my cousin. I'm "Halls"!
You all look the same to me.

- Warren

[kai0ty]

ah, a typo discovered i have. mb. also i thought that you were supposed to work left to right? isnt that a rule too? maybe im just crazy.

[HallsofIvy]

No, you READ left to write (well, those of us of European linguistic bent). You do operations in the defined order as Brum said. As far as you being crazy- I wouldn't presume.