價格：免費
檔案大小：75 MB
版本需求：系統需求：iOS 11.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Free mental maths brain training.
simple, fast, you can use it everywhere!
internet connection not required for use.
Addition, Subtraction, Multiplication and Division
Supported languages: English, French, Italian, Portuguese, German, Spanish, Chinese
Now, download and play for free!
mental maths for adults or kids
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