"Nan Nan Drill" is calculated drill that you can repeat the basic learning addition , subtraction , multiplication , division of . Of course , practice ninety-nine , division that much , calculation of negative to learn from middle school students is also possible the calculation of single-digit to learn in first grade . It is capable of operating applications iPhone, only on the iPad .
It is displayed in the bar at the top of the screen question appears one by one question , or how much advanced , which way it is how much remains . After you answer all questions , it is possible to review , you can check the answer again .
When you do the scoring , problem - score - answer time and answer time score is displayed, and the answer was in the past history can view .


* I can set the question as their favorite .
- Can number up to four orders of magnitude can be set , to challenge to challenge yourself
- Set the calculation questions such as "I want to display only division " , to be displayed
- 1-100 questions to freely set the number of questions
- Set the calculation of negative ( minus)
- Select the grade as a user , can be switched the Chinese characters of the question