Arithmetic Line is a online game that you can play on 4J.Com for free. As the beginning of the math study, you better be familiar with the basic arithmetic, but some people may be bored by just sitting there doing homework, here's a game suits you well. Arithmetic Line is a skill game just like the dancing line, but not exactly the same, your barrier will be cubes with calculating signs, and there will be a simple formula in the top right corner, you need to figure out the lacking sign of it and drive your line pass through the corresponding cube. If you want survival, you need not only skill but also brain, hope you can get a high score. Good luck and have fun!