Luyện tính số nguyên cơ bản

Features Luyện tính số nguyên cơ bản

App was created for the purpose of helping students practice the ability to mentally calculate addition, subtraction, multiplication, and division of two integers.
Sharpen your skills in accuracy and speed up math operations with integers.App is easy to use, user-friendly and can be used right after downloading the app without detailed instructions.App is very necessary and effective for students who are slow in calculating ability, or confused...Calculations include: Add, subtract, multiply, divide two integers within 100.
App counts the number of consecutive correct calculations during practice.
When learners get wrong at any sentence, the number of consecutive correct sentences is =0.
If the learner corrects 100 consecutively, the learning process is complete.