The issue of calculation в Android Market

The issue of calculation (v. 1.0) Разработано Tech Kumazaki

This app is a simple calculation can practice.

This is addition, subtraction, multiplication can practice.

Addition and subtraction, four digits. Multiplication are questioning three digits of the problem.

This is answer 50 questions each, increasing the level. Addition and subtraction, four digits. Multiplication increases the level of three digits.

Enter the numbers in the problem space, tap the answer button.