Mental Math Free

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 calculation

Please let me know any bugs and suggestions, and your secrets of mental math!

Keywords
mental math, mental calculation, mental arithmetic, multiplication tables, times table, brain training, math tricks, math workout, math exercise, math, arithmetic