What game is this? Answer: Math Blaster!

[Kerotan]

The game I'm thinking of:

Played it on PC in the 90's

It was in space

Loads of trash started flying across the screen. 

You had to shoot the trash and destroy it.

That's all i remember.

Can you guess the game? Any help appreciated!

EDIT: Thanks for the help. The game is called Math Blaster! Here is a video. You had a great childhood if you played this game :) 

http://www.youtube.com/watch?v=7F4_kzb_vzg