标签 乘法口诀

标签: 乘法口诀

印度乘法口诀超中国九九乘法表

当中国小学生还在背9×9乘法表的时候,印度的小孩子都会背诵19×19乘法表了。 对于中国不少小学生来说,背诵九九乘法表是一个艰巨任务,但你不知道的...
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