"Brain Quiz" is a 1 minute quiz app for improving the mental arithmetic.
It is a math drills designed for enhancement of arithmetic calculation.</div> <div class="id-app-translated-desc" style="display:none">“脑测验”是提高心算1分钟的测试应用程序。
这是一个数学钻头设计用于增强算术计算的。</div> <div class="show-more-end">