100 Floors: Level 99


It appears that Level 99 in 100 Floors is yet another math symbol-based stage that will have players dreaming about math tests from high school. At the beginning of the stage you will see a big 15 number in the middle of the door. Above the door are also a bunch of numbers with empty boxes beside them. In the lower bottom you will see 3 red buttons each with a math symbol.

The first one is the multiply symbol in the middle is the equal while on the far right is the divide symbol (do not mistake it for the plus sign). The plus and minus symbols are actually your volume controls. When you press the increase volume control you will get a plus sign and vice-versa.

The Solution

To solve the puzzle in level 99 of 100 floors you must place these symbols in this order then the door will unlock allowing you to beat level 99 of 100 floors!

  1. PLUS (Volume +)
  5. MINUS (Volume -)

100 Floors Level 99 Solution

  53 Responses to “100 Floors: Level 99”

  1. on floor 99 the ringer buttons don't show the + and – , I have iphone4… please help!

  2. It won’t work if your phone is on silent. Make sure you have the ringer switch on.

  3. (+) (-) are on the bottom left and right…you can barely see it

  4. Is it just me or this equation is just stupid. Using bodmas/bomdas 3+(3*4)= 15, or if you don’t use bodmas it equals 24. But in the game, it equals 4? And then you multiply it by 5 and then subtract 5. It would make more sense if it was 3/3*4=4*5-5. That is 3/3=1, 1*4=4, 4*5=20, 20-5=15.

    • No, your first equation is right, your logic is wrong. You need to get both sides of the equation equal to 15. So 3+(3*4) = 15. And (4*5)-5=15. So the full equation reads as 3+(3*4) = (4*5)-5. Both of which equal 15, the number on the door.

      • You have to remember how equations are actually solved as opposed to just doing it left to right. For the longest time I was trying to solve strictly left to right and was getting stuck…then I remembered 8th grade algebra!

    • In equations, if there are no ( ), multiple / divided get first priority before +/- . That’s why 3+3×4=15 and 4×5-5=15. Only (3+3)x4=24.

  5. Reboot your phone, worked for me

  6. My volume button is broken does that meen I’m SOL I really liked this game this sucks

    • I have the same problem, my volume button (the double sided single button for both buttons thingy) broke, and so I have been using the software to adjust my volume as opposed to the actuals buttons. i had to find a probe, just to pass this level. And I never even considered the volume control as a possibility because of this (I ashamedly had to look it up).

  7. The plus and minus are on my optimus LG are left and right of the scteen. I cant see them but I was just tapping around on the screen and found them.

  8. I don’t understand why this equation wouldn’t work 3-3X4+4X5-5. It equals 15 since 3-3=0, multiply it by 4 and it equals 0, add 4 and you get 4, multiply by 5 you get 20, subtract 5 and you end up with 15. The solution is not unique so it should allow for multiple answers.

    • According to basic math principles, your answer to your equation would be 6 and not 15. You have to do multiplication and division before any adding or subtracting.

      • Still they only except one anwser for example I put in 3+3-(4/4)+5+5. This gives you 15 using pemdas. Starting with the division 4/4 is 1. 3+3=6. 6-1=5. 5+5+5= 15.

  9. how come I got "(3)+(3)-(4)x(4)-(5)x(5)" got 15.. if PEMDAS works..
    then I got "3×3+4×4-5-5" both still wrong answers? what!

    • I did exactly the same and it denied, stupid fucking shit that isnt thought through properly by tit head software developers who think its fucking 'quirky' to put in an equals symbol. Its like "Oh whats that you found another way to do the puzzle, well fuck you its not gonna work, only the answer that we have written down will work" Piece of shit. level 95 was another one that pissed me off, if you press two diagonal buttons at the same time it will light up a button that you didnt press, absolute shite that throws you off what your supposed to do because your convinced pressing two buttons has something to do with the answer. Absolute horse shit!

    • you have -15

    • Another way is 3+3-(4×4)+(5×5). I think the trick is that you HAVE to use every symbol. +-x/

  10. How do you pass this one if you don't have a volume "button"? I'm stuck on 99 because I play on the KINDLE and they don't have a volume "button".

  11. I have a kindle fire and adjusting the volume doesn’t work any body find out how to get past this level?

  12. For kindle fire the plus button is the panel to the left of the 15 the minus is the panel to the right

  13. Playing this on S3, the white block on left and right of the lift between the 2 strokes are actually + and -… not sure on other devise thou.. hope this helps.

  14. Order of operations. You multiply first before adding or subtracting. 3×4=12+3 to get 15 and 4×5=20-5 to get 15.

  15. For kindle fire look around on the screen and there would be a white plus and a white minus hidden on the wall.

  16. This is just idiotic. Why does there have to be an equals sign? The order could just as easily have been 3*3 + 4*4 -5 -5. But no, even though that also equals 15, the game decides that only one of the different answers is correct. I thought this game was supposed to be strictly logical.

    • Well, half the answers are completely random and can’t be solved logically, then the majority of the other half make assumptions about who you are and what you have studied…

  17. This level cannot be beaten on the kindle fire because there is no plus and minus! I NEED HELP!

  18. On the kindle Fire there is a plus symbol in the small rectangle on the bottom left of the elevator door and the subtraction symbol is in the right side bottom. They are white so it’s hard to see but they’re there.

  19. How do u do it if u have a kindel

  20. Plus and minus sign next to the elevator door.

  21. I cant find the plus or minus

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  24. cheat level 99

  25. 3/3*4=4*5/5 but that didn’t work… They should check their puzzles…

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