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乘法 二位數的特殊解法(Grade 4 Math - Special Math Solving for two-digit multiplication.)

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小學數學 - 二位數相乘的特殊解法, 適用國小四年級以上到成人
Special Math Solving for two-digit multiplication. It's useful for all people.


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Everyone can learn math or English easily from this video channel. Everyone can also learn how to speak Chinese. I hope everyone would love this video channel. 這英文與數學影片學習頻道能希望每個人都能很輕鬆的學習英文、中文與數學, 也希望大家能喜歡此影片頻道。喜歡它請訂閱此頻道,謝謝! Please subscribe this video channel. Thanks
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