Description

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'.

What's New in Version 2.1

bug fixed.