Get MathPup to the exit in each level. Have MathPup fetch numbers in the correct order to fill in the blanks in the problems. Once all of the problems are filled in correctly, fetch the key to open the exit.
Use the arrow keys to move MathPup around the levels. Double jump by pressing the arrow key again while MathPup is in the air. Press the R on-screen button to replay the level, and the forward sign button when finishing a level to move on to the next one.