Train and exercise your brain by continuously solving simple problems. You have 30 seconds to solve each problem.
Your goal is to get a result in the yellow box by using the available numbers and using any of the 4 basic operators
(+ , - , x, /). Your score increases by the remaining time. So the faster you solve the problem the higher score you get.
Last updated on 2016年10月11日
此版本包含小幅错误修复和常规改进。请更新至最新版本，以获得更佳体验。
