Choose high number: 1 2 3 4 5 6 7 8 9 10 11 12
Choose low number: 0 1 2 3 4 5 6 7 8 9 10 11
3. When you're ready, click . To stop, click .
4. Enter the answer and click "Check Answer":
=
A gift to the children and math students of the world from the U.S. Department of Energy's Argonne National Laboratory.
You may download the ArithmAttack, use it and distribute it free of charge, provided you do not alter it or charge a fee for downloading it, using it, or distributing it. To operate correctly, the ArithmAttack must be viewed with Microsoft Internet Explorer 3.0 or higher or Netscape Navigator 3.0 or higher. The latest versions of these browsers are free from their manufacturers. To download the browser of your choice, click its name below:
Downloading instructions for the ArithmAttack:
Created 1998 by David Baurac Office of Public Affairs Argonne National Laboratory baurac@anl.gov