I didn't quite understand how the math worked and how the game was played. I think it would help if you added some more UI to the game screen that Had the number values next to the food. The art work is very charming and well done!

The artwork is cute and the sliding of the options looks nice! Some nice sound effects as well.

I think this game could really use a tutorial. I read through the instructions several times but had difficulty understanding what the different rows represented. If not tutorials, I think just having the directions on the gameplay page would be helpful (instead of having to toggle between the two) and somehow having the food art show the food's numerical value as well.

Also, minor suggestion: I think "Enter" or "Space" to select would be more intuitive than the "Up" arrow.

Nice job in such a short amount of time!