Aug

#### 01

2012## 100 Floors Walkthrough | Floor 99 Walkthrough | 100 Floors Cheats Level 99

The ninety ninth level has a number fifteen in the middle of a silver door. Below the door, is three red button with a multiplication, equals, and division sign on them.

1. Tap Volume Up Button On Device

2. Tap Red X Button

3. Tap Red = Button

4. Tap Red X Button

5. Tap Volume Down Button On Device

100 Floors Walkthrough

Floor 99 Walkthrough

Level 99

100 Floors Cheats

**100 Floors Walkthrough – Level 100**

**100 Floors Walkthrough – Level 98**

Emma

That doesn’t make sense!! Does it????

tara

I get the puzzle but am playing it kn my kindle fire and I don’t have a smart phone. My kindle does not have a volume up button its all touch screen what do I do?

yini

Use the + and – sign next to the door.

Catby

For the Kindle the up is lower part of the wall beside the left elevator door. The down is lower part of the wall beside the right door. They only show up when you touch the spot.

hayley

im on an iphone and its not got an up od down button on it, the volume buttons doesnt work either, what do i do?

Robear

You make 2 equation. Both equal 15 and therefore equal each other.

Pato

I agree Emma, I figured out how to leave it as 15 without using the equals sign in the middle and it didn’t work. What is the significance of 24 in this puzzle?

Annes

it does!! 15=15.. you stupid?

Cereal

(3+3)x4=24

3+3×4=15

Yo

You always do multiplication or division before adding or subtracting!

Linda

The rule when you have a sum like 3+3×4 is that you have to multiply first so 3×4=12 and after that you add the 3 which makes 15.. You’re supposed to learn that in school :p

Descendant

It does… It uses MDAS principle

Chibis

I think you mean bedmas…

B- Brackets first

E- Exponents next

D+M- Then divide and multiply

A+S- The you add and subtract

In correction, your statement is false because brackets with addition or subtraction must be done before multiplying or dividing.

Dude

I think you mean BPERMDAS-

1. Brackets

2. Parenthesis

3. Exponents

4. Radicals

5. Multiplication

6. Division

7. Addition

8. Subtraction

Aaron

Really? 24? Can you even do maths?

3+3×4 is 15 and so is 4×5-5…

Makes perfect sense

Simon

Its a mistake on the makers part it must be, 3+3*4= 24

Stupid

The formula is 24=15 not 15=15. [email protected]

Scott

Please excuse my dear aunt sally, aka PEMDAS dude. Multiplication and division are always computed before adding or subtracting.

So really you multiply 3×4 and then add the first 3 =15

Erika

Use your order of operations guys. Come on, it totally makes perfect sense.

Dimpl

Balls to life, it does the multiplication first. In this sort of puzzle, especially considering that you must enter the symbols in order L-R, I assume it would be evaluated in order.

hatfira

Of course!! It’s an order of operations problem. The secret to me was the + and – (volume buttons). What’s up with that?!?!

In case you’re wondering, it’s 3+(3*4) = (4×5)-5. That’s 3+12, which is 15 and 20-5; also 15.

Hope it helps!

Max

Annes is right. 3+3×4 does equal 15 because you multiply the 3 by 4 before you add the first 3, since multiplication and division take priority over addition and subtraction. So basically instead of 6×4 you get 3+12.

Nicole

Um one side equals 24 not 15, so are you stupid?

Amber

3+3*4=15

3*4=12

12+3=15

4*5-5=15

4*5=20

20-5=15

P.E.M.D.A.S.

You have to remember the order of operations.

Aaron

Nicole, your a fucking idiot.

I do engineering and I can assure you that 3+3×4 = 15 because 3×4 takes precedence over 3+3, hence its 12+3 = 15.

david

easy there guys,

@aaron: it’s you’re not your

your is a possesive pronoun as in “your dog”

@simon: you might want to broaden your horizon: the star is used in america as a multiplication sign. in europe it’s a small x, like a tilted plus. so no, it is not a mistake on the makers part.

RyoSaeba

Goes to show who paid attention in school and who was playing with their hair…

Baldrian

It’s obvious to anyone who’s ever paid attention in school that 3+3*4=15, but what I would like to know is where some genius found the clue to hitting the volume buttons revealing the + and – signs. One could of course argue that the volume button has + and – written on it on my phone, but it’s pretty darn small, and I can’t really see it while looking at the screen. I feel there should have been a hint on the display. Btw, isn’t it amazing that even after it has been repeatedly explained why 3+3*5=15 in the comments here, people still manage to leave comments claiming it is 24?? lol.

matt

Am I the only one who thinks the symbol in the game looks like a division sign and not a plus sign?

Josh

EXACTLY! I’ve been writing out all these scenarios using a division sign, thinking to myself about how easy it’d be if it were just a addition operator…

courtney

My volume button on my phone is broken. So how do I get around doing the +/- thing to complete the level? HELP I want to finish the levels

Bill

See the response by MasterAlexi below (nice job Master, doesn’t seem any of us noticed this)…you can click the panel on the left side for “+” and on the right side for “-”. They are actually indicated, just really hard to see.

Ana

Use your headphones. It works for iPhone

MasterAlexei

In a Sollution says “Tap Volume Up Button On Device”. It gives “+”. Tap it Down – “-”.

pooky

I teach math, and the order of operations calls for multiplication/division first, THEN addition/subtraction. It is solved this way, despite being written left to right (how else is an equation written?)

Also, I got plus and minus by tapping the spaces to the left and right of the door, no volume buttons. You people calling everyone dumbasses for not calculating 24, you look really stupid and you make me want to facepalm with my phone. Doesn’t 15=15 make more sense anyway?

Erik

This should not be in a game like 100 floors. There is no fun in it.

Binky

Sod the sums… The part I didn’t get was using the volume buttons! Whaaaaa’?? I mean, I figured the fact it constantly said ERROR at all times (I don’t mean just when it glowed) was probably a clue, but I couldn’t see a definite clue for using the volume buttons and couldn’t see how to do the sum without addition and subtraction. :/ Besides, ever since that stupid level where you had to press 3 buttons, NONE of the levels have worked properly! ESPECIALLY first time. And now I need a magnifying glass for the new levels. The creation is getting stupid. I keep having to check the walkthrough just to find out I had it right – ever since that bloody triple press that makes the game zoom everything… and worse. Not counting the new levels where I need a large screen cos I cannot see the clues at all on one level. Grrrrr

Binky

@David – I’m curious as to what you mean by the “star” being the multiplication symbol only in America. What do you mean?

Firstly, it’s an asterisk, not a star.

Secondly, in Europe/Britain, the “x” was replaced with “*” on computers/phones as they didn’t duplicate the sign that looked like a letter. The “/” sign was always used for division in algebra so was used as the division symbol on phones and computers instead of giving you the choice of either symbol designating division. (The other one being similar to the “%” symbol). It was supposedly to avoid confusion and save programming space. It is still left off most devices, including mine or I would have typed it.

I’ve never been to America so I don’t know what symbols you’re taught to use… But I’d still like to know where you got your ideas. Also, were you taught that “info” before or after the change became commonplace along with mobile phones (cellphones to you).

I’ve been talking to a lot of new American mates recently and it’s got to be said you seem to have very funny ideas, majorly inaccurate, about the british and Europeans. Lots of small mistakes like this one add up to you thinking we’re idiots; but of course your mistakes make you sound like idiots. It’s the blind leading the blind perhaps? One mate just told me they wanted to learn gaelic, which is sort of fine, but they may as well have said they wanted to learn Indian or European since there are multiple gaelic languages (gaelic really just meaning “Celtic”). I’ve got to wonder who’s teaching this rubbish in America. I spoke to some American teachers and found they were teaching this sort of misinformation in your schools! Then again, I’ve met some who make me wonder how they even know which orifice food goes into. :/ I’m glad not all Americans are like that but… you sure have a lot who are. Your education system is incredibly censored. :/ I don’t know what to say except that you should check your info from non-American resources, meaning multiple resources, the way others do. It’d help.

stein1071

There’s a “+” & “-” symbol next to the elevator on either side. I can see where you wouldn’t be able to see it on a phone. Its fairly difficult to see on my tablet

sam

If you look on the wall it faintly shows the plus and minus signs

seriously?

Why do these things turn into a need to throw stones? The * is termed star because of the telephone. Yes it is in fact an asterisk, but was coined the star as it is shorter & more easily identified universally. *=star, #=pound(pretty sure that was universal for lb. or a pound note. And it wasn’t just in Europe that the x isn’t duplicated. The symbols are the same here in America. So David was explaining this as, I believe he thought Simon was thinking the mistake was the symbol. Was a simple mistake. No need to go on a patriotic rant about education, as in my personal opinion you just sounded angry not educated, even though I’m sure you are. And as for your American friend, I would say because there are so many forms of Gaelic, he probably said it in context. If talking of Ireland then assume Irish Garlic. If not in context that is generally what is meant. I’m sure you already know that. But you seem like you’re just wanting to target people to rant about. P.S. I have British friends, and I would never say things like you have & expect to still have them. And P.P.S I think they way you all say aluminum is rubbish. –that’s a joke btw.

Brian

This is gay how come everything has to do with math I suck at math

assdee

Why isn’t the “DIVISION” sign be used in this level?

We can also get the value15 without using the “EQUAL” sign then right?

3×3+4×4-5-5

clauclauclaudia

Yes, that really ought to work as well. But then you woukdn’t get to use the “=” that is front and center.

DJ

its 3+3×4=4×5-5

Nadi

I figured it out… Push the up on the volume control once up, press the x, press =, press x, then press the volume control once down

Nadi

If you have a touch screen and not volume buttons there is the plus and minus button on the wall either side of the elevator doors… Look closely

birdie

As a 64 year old non genius I found the answer to 15 as above but the door wouldn’t open and as there are no brackets as an operand (bodmas) didn’t immediately equate the answer

Bill

If you dont want to believe anyone on here as to the correct answer…simply google 3+3*4= and see what it shows you. simple technology.

Anonymous

I spent so much trying to find one equation that gave me 15 (mind you, I was under the assumption that it read left to right and not the traditional algebra rules of multiplication and division first, I guess because of the way it is entered). I finally figured it out, and the freakin answer didn’t work. I come here, and now I feel like an idiot cuz it was so simple!. The answer I got the first time was 3-3×4+4×5-5 which equals 15 (if worked out from left to right)

brooke

i am playing on a old i pod touch and my volume is mest up so the only way is to go to settings and turn i up so i am stuck

Robear

It’s TWO equations. BOTH equal 15 & therefore each other. Thus the equal sign in the middle!

mj

i have a tablet so there is no volume button. you just change it from the screen, so i tried that but it didnt woork. help.

Pendejo

Weird, Our rule was called BEDMAS at my school.

Brackets.Exponents, Division, Multiplication, Addition, Subtraction.

this level just sucks

there are too many possible solutions to this problem, and it is easy to get frustrated:

for example:

1. proper order of operations

3*3+4*4-5-5 gives 15

2. left to right order of operations can also give 15

3/3*4+4-5*5 gives 15

3. and oh, great now we can do it with an equal sign in the middle and proper order of operations

3*3+4=4*5-5

after getting 1 and 2, i got frustrated and came here.