There are 3 levels in the easy medium and hard.
At each level, there are questions of addition, subtraction, multiplication and division.
A tough struggle awaits you. Good luck.
Play now for free download and free!
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有在易介质和硬3级。
在每一个级别,有加法,减法,乘法和除法的问题。
一个艰难的斗争等着你。祝你好运。
现在玩免费下载和免费的!
德语英语法语俄语加入语言