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１ 问题的提出 由中国教育学会数学教育研究发展中心审定，首都师范大学出版社出版的《小学数学奥林匹克常规训练题库》五年级册分数计算技巧单元有一道水平测试题，其解答如下： 某市教研室编写的初中一年级数学教学参考书，也有一道类似的问题：求全体有理数的和．答案是：“
1 The question was put forward by the Mathematics Education Research and Development Center of the Chinese Education Society. The elementary mathematics olympiad routine training question bank published by Capital Normal University has a horizontal test question for the fifth grader score calculation technique. The answers are as follows: The first grade mathematics reference book written for junior high school also has a similar problem: the sum of all reasonable numbers. the answer is:"