Arithmetic Invaders Express: Grade K-3 Math Facts

Play one of Arithmetic Invaders: Express addition, subtraction and multiplication games to defend the solar system and master K-3 arithmetic. Also, learn some basic facts about the Solar System. * Count up Game * Count down Game * Addition Game * Two Subtraction Games * Multiplication Game * Basic facts about the Solar System * Focus on Math problems to avoid random shoot-out * Complete missi…