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- 26 Edu App Store
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- Mental Multiplication Tricks
- iOS 应用: 教育 来自: Alexander Mokrushin
- $0.99
- 列表: 0 + 0 排名: 0 评价: 0
- 积分: 1 + 5 (4.6) 版本: 3.0 Using this app you will learn to do some multiplying of small numbers (till 12) without using the multiplication tables. This app presents only a part of the Trachtenberg system - a ... ⥯
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