Pre algebra finding 'X' in addition 3rd grade plank game

Pre algebra games on finding 'x' in addition problems . Math walk the plank game is a fun game with pirates on a boat at sea. Get the answers right, click to roll the dice and move forward or backward on the plank. Each time you fail a problem, the pirates chase you one more step out of the boat. If you keep choosing the wrong answers, you will end up being pushed out of the boat into sea where monster sharks are waiting for you. Have fun !

In this game 3rd graders will find an unknown variable 'x' in addition equations.