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小学数学第六册教材难点与重点辅导──“亿以内数的读法和写法”和“亿以内数的加法和减法陶雪鹤（人民教育出版社小学数学室）一、亿以内数的读法和写法这部分内容的重点是万级数的读、写法。难点是各级的中间或末尾有０的数的读、写法。教学这部分内容时，应注意下面几...
Primary school mathematics sixth volumes of textbooks difficult and key counseling ─ ─ “reading and writing more than one hundred million” and "100 million within the addition and subtraction of the number of Tao Xuehe (People's Education Publishing House primary school mathematics room) Writing this part of the content of the key is the million series of reading and writing.The difficulty is that at all levels of the middle or the end of the number of 0 reading and writing ... Teaching this part of the content, you should pay attention to the following ...