CalcTutor - a tool for students and kids

"CalcTutor" is the new app to practice addition, subtraction and multiplication. 

It is possible to set up three difficulty levels: "Easy", "Medium" and "Difficult". 

"Easy" level: the generated random numbers vary from one to five.
 
"Medium" level: for addition and subtraction the generated random numbers vary from one to fifteen, for the multiplication the numbers vary from one to ten.

"Difficult" level: for addition and subtraction the generated random numbers vary from one to thirty, for the multiplication the numbers vary from one to fifteen. 

To be successful in mathematics it is very important to have undergone the ownership of the basic operations. Without the necessary preparation it is practically impossible to proceed in the study with themes like fractions and equations.