Choose from 3 levels of subtraction sums from single digits to three figure problems. Each sum is randomly produced one at a time on a blackboard style interface. Audio and visual encouragement let's you know when you are right and when you need to try again. Includes the ability to demonstrate "borrow 1". There is a facility to print out personalized certificates to encourage improvement.
What's new in version 1.7
ReleaseNovember 11, 2013
Date AddedNovember 11, 2013
Operating SystemsWindows 2003, Windows Vista, Windows 98, Windows Me, Windows, Windows NT, Windows 2000, Windows 8, Windows Server 2008, Windows 7, Windows XP