Mental Math Free (com.cyandroid.mentalmathfree) on Google Play
Become good with numbers. Practice makes perfect! Let's enjoy mental math and train your brain!Features- Times Table Training(1~99!)- Useful tips to simplify difficult math problems and exercises to use them.- Four arithmetic operations training in three difficulty levels- "Hide Question" mode to train to hold numbers in memory for mental calculation.- Flash mental calculationPlease let me know any bugs and suggestions, and your secrets of mental math!