珠心算讲座4集全 加减乘除各一讲 速算珠心算教程

珠心算讲座4集全 加减乘除各一讲 速算珠心算教程
启蒙·小学·初中·高中 学龄学历: 记忆法/心算速算 珠心算讲座4集全 加减乘除各一讲 速算珠心算

教程

珠心算讲座-乘法.rm
珠心算讲座-减法.rm
珠心算讲座-加法.rm
珠心算讲座-除法.rm

解压密码：xsge

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