- Design modified
The final step for the first grade school arithmetic, you can learn to add with carry-up and subtract with borrow-down easily.
Keeping on training is very important to get familiar with numbers. Beat the Robo by answering the questions from Robo.
Now, you will be a hero at the school!
- June 18, 2014 Initial release
- August 07, 2014 New version 4.0