This application is intended for elementary school students. It will train you to the basic level of computer skills. It has 12 levels, from easy to difficult.
I hope you can improve your computer skills.

Kindergarten, grade 1 to grade 6 are trained step by step from easy to hard to improve the speed and accuracy of calculations.

The following levels of training are included.
Addition within 5
Advanced addition within 5
Subtraction within 5
Subtraction within 5 advanced
Addition of identical numbers up to 10
Addition within 10
Subtraction within 10
Addition within 100 Complementary
Addition within 100 Advanced
Addition within 100 Advanced Subtraction Prep
Subtraction within 100 Elementary
Subtraction within 100 Elementary
Subtracting within 100 Positive numbers
Subtraction within 100 Advanced
Multiplying identical numbers within 5 beginners
Multiplying identical numbers within 5 advanced
Multiplication within 5 beginners
Multiplication within 5 Advanced
Multiplying 1-digit numbers by the same number Beginner
Multiplying 1-digit numbers by the same number Advanced
Multiplying 1-digit numbers by 1-digit numbers Elementary
Multiplying 1-digit numbers Advanced
2-digit Numbers Elementary 1
2-digit numbers Beginner 2
2-digit Intermediate 1
2-digit numbers Intermediate 2
3-digit addition Beginner
3-digit addition Intermediate
3-digit addition Advanced
3-digit Subtraction Beginner
3-digit subtraction Intermediate
3-digit Subtraction Advanced
2-digit Multiplication Advanced 1
2-digit Multiplication Advanced 2
2-digit Multiplication Advanced 3
2-digit Multiplication Advanced 4
1-digit Division Beginner 1
2-digit Division Beginner 1
2-Digit Division Beginner 2
2-digit multiplication and division mixed Intermediate 1
3-digit division Beginner 1
3-digit division Elementary 2
3-digit division Intermediate 1
3-digit division Intermediate 1
3-digit division Advanced 1
3-digit division Advanced 1
3-digit multiplication and division Advanced 2
etc.