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Column Subtraction 1.4 - Practice Math Problems and Solve Jigsaw Puzzles

Column Subtraction 1.4 – Practice Math Problems and Solve Jigsaw Puzzles

Independent developer Esa Helttula has released Column Subtraction 1.4, an update to the popular educational math app for iPhone and iPod touch. Column Subtraction 1.4 allows the user to teach and study column subtraction problems step by step and animates all the steps. The user can now input custom numbers or use random problems like before. The app is easy to use and it has an intuitive interface with customizable colors and other settings.