Repeat calculation drill

The free version, calculation drill app that can make the problem yourself. The number of questions, time, calculation codes, will Kitaeyo the computing power by setting yourself the difficulty! Analyze your computing power to record well as accuracy rate and answer time. The recording and analysis of a one-time basis, the number of correct answers from using the app, not the number of correct answers, correct rate, the answer mean time. Brain training, calculation drill, please use as a calculation exercise. [Setting items] Problem number setting ... one question to 10 questions Time limit set ··· OFF / ON (can be set up to 20 seconds in 1 second increments) Digit set of numbers (left) ... random single-digit to 5-digit number which can be configured Code setting ... random + (addition) over can be set in (subtraction) Digit set of numbers (right) ... random single-digit to 5-digit number which can be configured https://play.google.com/store/apps/details?id=com.dorirubuy.tk