Generate html speed drills for practice taking arithmetic tests.
Since arithmetic tests also test speed in writing the answers, it is best to improve both at once. Thus we need a printed medium. HTML is easy to generate, so this program outputs HTML.
This generates html containing 2 pages of mixed addition and subtraction problems. Some day I may expand it, but for now you simply go to the directory where the code is located and type at the command-line:
./generate_tests.py > my_dest_file.html
Then print it and there will be 160 problems divided into 80 problems per page.