1. Launch the app

2. In the Home screen choose grade, number of questions & choose operation then it will navigate to appropriate screen:

3. Click on Play button:

4. After clicking the play button the quiz starts. Questions reduces based on selected options and ends when time is out.

score is shown in a popup with appreciation. play button will turn into Replay.

you may also go back to the home and choose different operation. Follow the same process for quiz.