The ArithmAttack [adjusted by Mr. T]

How many computer-generated arithmetic problems can you answer in 60 seconds?

Goal: 1 - 12 for any operation, 30 in 60 seconds.
Random: 20 in 60 seconds
(a second is lost on each wrong answer)

1. Choose an operation: 2. Choose numbers from 0 to 12:
Choose high number:

Choose low number:

3. When you're ready, click . To stop, click .

4. Enter the answer and click "Check Answer":

=

seconds remaining
answered correctly
answered incorrectly
No Test Yet Tried

A gift to the children and math students of the world from the U.S. Department of Energy's Argonne National Laboratory.