Background: A while back, our two young boys wanted to see how fast & accurately they could do beginning addition and subtraction problems. We quickly grew tired of writing out random problems and after a bit of coding the first Speedy Math pages were born. As the boys have grow, the number and types of pages have grown with them.
Is it free? 100% free. No strings attached.
Why should I register? Many of the quizzes are connected to a database that stores your results. Graphs let you see your improvement and "frequently missed" tables highlight the more difficult problems.