Interesting gameplay concept.
The space background had a lot of high-value colours that gave poor contrast against the plain-white text. In the future, you could give light-text a dark background so it shows up clear against any colour. Also, more visual cues for the player (Such as a representation of the time remaining) would enhance the experience.
Nice job capturing the theme in your game!

It's like being on a stressful exam) An interesting combination of absurdity and tension.

My math skills are not good enough for this :( but i managed to finish a few calculations.

Also seeing what i typed and knowing if my undos are working would be a nice addition

cool tank physics!

Ah the stress! This raised my blood pressure faster than any other game I've played on here so far so bravo! Very interesting way to go with the theme, I dig it. Wish I could have seen what I was inputting and how much time was left (though not knowing made it even more stressful and that might have been the point?).

The concept of this is really, really cool.
That being said, I couldn't type any numbers. ;-; Not sure why, but it just wouldn't work for me.
I really like the take on the theme though, props for innovation there!

This is way too stressful for me XD The timer for how much time is left is missing, in my opinion. Fun game.

This was an ...interesting... game.

I didn't really get to experience the time pressure of answering questions, because I just jumped over to the tank and knocked it off its plinth, and then I didn't have to answer any questions at all :-D

It definitely would have helped a lot to show the players the numbers they are typing, because in its current state you kind of have to hope you typed the right number previously.

a lot of times after I went into the door I would already fall off and die :( It does seem like an interesting concept. The audio is really interesting as well, I wish there was more types of math questions perhaps?