Mathopia is a tutor application that does a math quiz of 20 questions regarding multiplication, addition and substraction for numbers between 1-20. It was originally made for my own children.
Download the installer of Mathopia 1.3 for free and take a look at users' reviews on Droid Informer. The app runs on Android devices 4.0 and higher. The download of this application doesn't contain viruses or any kind of malware. The tool has been originally designed by Oxygen and it belongs to the Educational category.
Mathopia has been downloaded and set up by over 10 users and the latest update was released on May 27, 2016. The app was rated 4.4 on Google Play.