Arithmetic Invaders: Grade 1 Math Facts is a game developed by Reks and released on iOS. Continue Reading → Jump to a section: Home Releases Credits Overview Walkthrough Achievements Cheats Arithmetic Invaders: Grade 1 Math Facts Brainwaves View all → Discussion Article Thought Review 100 Share Arithmetic Invaders: Grade 1 Math Facts with others Arithmetic Invaders: Grade 1 Math Facts Releases Credits Characters List Overview Walkthrough Achievements Cheats Updates