Reverse one digit arithmetic

This App "Reverse one digit +-x÷" is a arithmetic training App. And this is a searching game, too. This App is a Reverse version of my App "one digit +-x÷";

This App has four categories, addition:"Reverse one digit +" subtraction:"Reverse one digit -" multiplication:"Reverse one digit x" and division:"Reverse one digit ÷". Each category has 9 questions on nine stages, random 81 questions.

ex.
"one digit +" : Find '4 + 8' from '12'.
"one digit -" : Find '10 - 6' from '4'.
"one digit x" : Find '9 x 9' from '81'.
"one digit ÷" : Find "12 ÷ 3" from '4'.
Fun Reverse thinking.
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Additional Information

Updated
August 13, 2013
Size
49k
Installs
5+
Current Version
1.0
Requires Android
1.6 and up
Content Rating
Unrated
Warning – content has not yet been rated. Unrated apps may potentially contain content appropriate for mature audiences only.
Permissions
Offered By
Currach Software
Developer
59, Nosekagi, Krakuwa-cho, Kesennuma-shi, Miyagi-ken
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