Game Instructions:
Click on the bugs to help Fribbit eat the numbers that solve the equations… and watch out for the mean crocodile!
TIP:
If you really want to beat the “pro” level, I suggest that you play in a team of two — one to just eat bugs and watch out for that mean croc and one to do the math and tell the other one what number to eat!
Source
http://www.coolmath-games.com/0-feed-fribbit-subtraction/index.html (via Wayback Machine)

