An interesting puzzle game about mathematical operations! I liked the idea of the play on words "Mr. Mat Hematic" and the game about math :D
I passed it to the end, level 7 made me strain my brain :D
I was pleased with the voice acting, it was unexpected :)
The music at the end is quite sad, which contrasts with the music during the game itself.
In general, I liked it, I love this kind of game, maybe it makes sense to bring it to a full game, great job!