There's quite a few calculators that get this wrong. In college, I found out that Casio calculators do things the right way, are affordable, and readily available. I stuck with it through the rest of my classes.

[–] [email protected] 17 points 1 year ago (68 children)

My Casio calculators get this wrong, even the newer ones. BTW the correct answer is 16, right?

[–] [email protected] 49 points 1 year ago (6 children)

16 is the right answer if you use PEMDAS only: (8 ÷ 2) × (2 + 2)
1 is the right answer if you use implicit/explicit with PEMDAS: 8 ÷ (2 × (2 + 2))
both are correct answers (as in if you don’t put in extra parentheses to reduce ambiguity, you should expect expect either answer)
this is also one of the reasons why postfix and prefix notations have an advantage over infix notation
- postfix (HP, RPN, Forth): 2 2 + 8 2 ÷ × .
- prefix (Lisp): (× (÷ 8 2) (+ 2 2))

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