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人教版五年级上册第33页《解决问题》中有一道例题。麦香园蛋糕房特制一种生日蛋糕,每个需要0.32千克面粉,李师傅领4千克面粉做蛋糕。他最多可以做几个蛋糕?学生讨论得非常热烈。生:4÷0.32=12.5(个)。生:不对呀,不可能做半个蛋糕,应用四舍五入法约做13个蛋糕。生:我认为不能做13个,因为剩下的面粉不够做一个,应该做12个。生:做12个,剩下的面粉可以再做一个小的。师:听起来蛮有道理的,对此还有别的意见吗?生:我想请大家看看题目,看是否和题目的要求相符呢?请跟我一起读一读这句话,每
PEP fifth grade volume on page 33 “solve the problem” in a case. Wheat Park cake room a special kind of birthday cake, each takes 0.32 kg of flour, Lee master collar 4 kg flour cake. How many cakes can he do? The students discussed very warmly. Students: 4 ÷ 0.32 = 12.5 (a). Health: No, it is impossible to make half a cake, applying the law to make 13 cakes. Health: I think we can not do 13, because the remaining flour is not enough to do one, should do 12. Health: do 12, the rest of the flour can do a little again. Teacher: Sounds plausible, and is there any other comment? Health: I would like to ask everyone to see the questions and see if they match the requirements of the title. Please read along with me