# tiger calculator

Discussion in 'Mac Apps and Mac App Store' started by ObsidianIce, Nov 16, 2005.

1. ### ObsidianIce macrumors 6502

Joined:
Jun 1, 2004
Location:
Seventh Circle of Hell
#1
Ok this may be the stupidest question ever but i can't figure it out. Basically i do a lot of math involving percentages. So when i have the Calc in Scientific before i could punch in say 500+10 then hit the % button which would then show 50 and then i could hit enter and get a total of 550. But...somehow something has changed so that now when i enter 500+10 add hit the percentage button it changes to .1 and then hit enter i get 500.1 so how do i adjust this within the program? Anyone know?

2. ### wordmunger macrumors 603

Joined:
Sep 3, 2003
Location:
North Carolina
#2
Basically, you'd need to type 500 (M+) * 10% (enter)(M+)(MR).

It's an order of operations thing.

3. ### ObsidianIce thread starter macrumors 6502

Joined:
Jun 1, 2004
Location:
Seventh Circle of Hell
#3
well yeah i can do it that way but don't want to. I was doing it the way that i typed...and oddly enough, i can still do it on my desktop...but not my laptop so there's got to be a setting calc option that changes this, i just can't find it.

4. ### ElectricSheep macrumors 6502

Joined:
Feb 18, 2004
Location:
Wilmington, DE
#4
I don't recall I've ever used any other calculator that behaves in a manner such that:

500 + 10 % = 550.

It strikes me that if one adheres to strict orders of operations, 10% is evaluated (to 0.1) before the addition. So, 500.1 is technically the correct answer.

Then again, I really don't use the percent key. Through all of my math courses, I've always been used to just using decimals to represent percentages. So, 500 + 10% becomes 500 * 1.1. The logic is much cleaner as there is nothing implied. That helps a lot when the math gets really thick.

5. ### ObsidianIce thread starter macrumors 6502

Joined:
Jun 1, 2004
Location:
Seventh Circle of Hell
#5
oh i know exactly what you mean, i noticed the calc was doing it and that's when i started using it more...saved me the trouble of converting everything to decimals, i would have to guess it's some sort of option that you can turn on and off and sort of sidestep the usual rules. It's seriously useful so i'd love to get it figured out.