On the first screen, choose the calculation to practice.
Choose your training calculation at first screen.

Then, when you press the Question button, the numbers will be displayed.
Show number after pushing button of Question.

□ Enter the answer in the.
Input your answer inside square box.

When you press the Answer button, you can answer alignment.
You can find correct or wrong after pushing Answer button.

It's simple. Please try again and again.
It is very easy to use. Please try again and again.