High Score Function
Test your Subtraction speed! Compete for the highest score or use the practice mode learn your Subtraction facts.
3 Skill Levels. (Easy is designed for grades 1 - 2, Medium is designed for grades 2 -3, Hard is designed for any student who wants a challenge.
Timer that adjusts time based on chosen difficulty.
Practice Mode to learn your facts with adjustable number size.
- February 26, 2013 Initial release
- March 08, 2013 New version 2.0
- January 10, 2014 Price decrease: $0.99 -> FREE!
- August 26, 2014 Price increase: FREE! -> $0.99
- September 30, 2014 Price decrease: $0.99 -> FREE!