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九年义务教育六年制小学数学教材第九册53页中有这样一道应用题:杨家庄有78户村民,户户在信用社有储蓄存款。去年平均每户有存款2600元,今年平均每户比去年多存780元,今年多少户村民的存款和去年全村的存款同样多?由于编者安排在归总应用题的练习中,学生自然会列式为:2600×78+(2600+780)=60(户),并肯定其解答是正确的、唯一的。应当承认,如果杨家庄村民今年每户存款为(2600+780=)
Nine-year compulsory education six-year primary school mathematics textbook ninth book 53 pages have such an application title: Yangjiazhuang has 78 villagers, households have savings deposits in the credit cooperatives. Last year, each household had an average deposit of 2,600 yuan, an average of 780 yuan more than that of last year. This year, the number of villagers' deposits is as much as that of the whole village last year. Since the editors arranged the exercises in the total application questions, students naturally The formula is: 2600 × 78 + (2600 + 780) = 60 (households), and affirmed that the answer is correct and unique. It should be admitted that if Yangjiazhuang villagers deposit this year (2600 + 780 =)