from Currach Software, originally released 12th December, 2011
This App "Reverse one digit addition" is one digit addition training App. And this is a search game and speed puzzle game, too. This is the Reverse version of my App "one digit additon". There are 9 questions on nine stages, random 81 questions. ex.) Find '8+4' from '12', Find '3+4' from '7'.