[kellands]

I might be opening myself up to a moment were I feel as smart as a neanderthal,

But when I was using the calculator on my playbook to work out some expenses & I went to add a percentage it gave me a wrong figure.

I've tried to do simple percentage figures with the calculator in many different ways but it will flash red on the display unless the correct sequence is pressed.

If I do a simple 100+10%= I get the answer 100.1

Now my maths has always been reasonably good but I've been getting lazy a bit recently but I haven't lost it that bad to know that is just slightly wrong.

If i try it any other way it just won't do it.

I'm running OS version 2.0.0.6149

Anyone else have this fault

Or have a fix

[ridesno159]

Ummmm 10% = 0.1 so 100+10% (0r 0.1) does equal 100.1

Maybe I don't understand what you're trying to do...

[taylortbb]

While it's not operating the way you're expecting the math is correct for how it's operating. 10% = 1/10 = 0.1. So you're punching in to it 100 + 0.1, which correctly gives 100.1. I'm not sure why the calculator does this or if other calculators do it differently. The percent button really isn't required on a calculator though, I never touch it. You could get the answer you're looking for by doing 100 * 1.1. Similarly 100 * 1.15 will add 15%. If you just want 10% of 100 then 100 * 0.1.

[tabulus]

Wow, it makes the same mistake for me as well!

[tabulus]

While it's not operating the way you're expecting the math is correct for how it's operating. 10% = 1/10 = 0.1. So you're punching in to it 100 + 0.1, which correctly gives 100.1. I'm not sure why the calculator does this or if other calculators do it differently. The percent button really isn't required on a calculator though, I never touch it. You could get the answer you're looking for by doing 100 * 1.1. Similarly 100 * 1.15 will add 15%. If you just want 10% of 100 then 100 * 0.1.

Seems a pretty useless button then! It only seems to make sense doing things like 100x10%=10 to work out percentages then. But as you say, easier to do the multiplication yourself.

[fj_cruiser]

100 + 10% of what?

Try 100+10%x50= and you will get 105...

[andino]

The calculator is correct. Its following order of operations which means multiplication/division first (in this case; remember PEMDAS?). Since 10% = 1/10 or .1, its effectively doing 100 + 0.1 = 100.1

[OneArmJack]

To be fair to kellands, the calculator in Windows (XP SP3) does give 110 for 100 x 10%.

[Chaddface]

http://forums.crackberry.com/blackbe...entage-657422/

[andino]

To be fair to kellands, the calculator in Windows (XP SP3) does give 110 for 100 x 10%.

He is doing 100 plus 10% though. Not multiplying 100 by 10 percent.

[kellands]

OK then phone in hand (BB 9360)

100 + 10 % = 110

10% is 1 tenth (1/10)

1 tenth of 100 is 10

100 + 10 = 110

Now I am a part way through a couple of bottles of cider but I don't think its quite gone to my head yet

[ssbtech]

Yet the calculator on my Torch works it out to 110.

Interesting.

[andino]

100 + 10% doesn't mean the same as what you're doing. What you're saying 100 +(10% x 100)

edit: 100 +10% is 110 on my bold as well which is weird. I still stand by that the syntax is correct to 100.1 by the playbook's method.

[justincase1911]

Math is hard.

[andino]

Hehe google also agrees with the playbook

https://www.google.com/webhp?sourcei...9&ix=sea&ion=1

[OneArmJack]

He is doing 100 plus 10% though. Not multiplying 100 by 10 percent.

A typo on my part. 100 + 10% gives 110; 50 +10% gives 55

[andino]

Yes but answer does not agree with the syntax since you're not multiplying anything against the percentage, 10% is 1/10 or .10

To get 110, you'd have to do 100 + (100 x 10%) = 110. Same for the second case, 50 + (50 x 10%) = 55

[Snap51]

Do 100 + % 10 and it works.

[OneArmJack]

My point was just that, mathematically correct or not, the Windows calculator gives the result the OP was expecting, so it's not surprising (s)he see the Playbook as 'wrong'.

[andino]

I tried it in windows and the calc has the percent button grayed out since I was in scientific. But when I put it into the simple mode, even when I do 10 then the percent button, it stays 10 so I don't really know what rule it is following.

[saudadeii]

lol.. My PB gives me 100.1 (My 9800 = 110 and my 9000 = 110)

[tabulus]

this is another nail in the PBs coffin. Let's hope the journos don't find out

[kellands]

Calculator - Metacalc

I think it comes down to how the calculator is programed to interpret the request.

I just want a lazy press of the button & the answer presented in front of me.

[TinRobot]

Same problem here. 100.1
My desk calculator does it correctly and gives 110. Sigh.
Who the heck programmed the calculator module? Where does that even make sense?

[andino]

Yeah imo, the calcs that are spitting out 110 are incorrect. Because anyone who understands the syntax of that equation would be like, what the heck, that's not what I put in? haha