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Free calculus trainer (German)
Calctrain is a free calculus trainer for the basic operation: addition, substraction, multiplication and division for the integers between 0 and 100. You can either chose the time you want to play, or the number of questions. CalcTrain is ideal to train calculating in your head. Even though pocket calculators exist, being able to do basic calculations without them is still an important skill.
Screenshot of CalcTrain:
If you have questions or suggestions please write us an email.
Bernd Krüger, 2015