如何何利用一个70毫升,一个30毫升的杯子把100亳升的水平均分成两份
推荐回答(3个)
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首先将100ml的杯子里的水倒满70ml杯子。(100ml30毫升水、70ml70毫升水、30ml0毫升水)
2.再将70ml的杯子里水倒满30ml的杯子。(100ml30毫升水、70ml40毫升水、30ml30毫升水)
3.然后将30ml的杯子里的水倒入100ml杯子。(100ml60毫升水、70ml40毫升水、30ml0毫升水)
4.接着将70ml的杯子里面剩余的水倒满30ml杯子。(100ml60毫升、70ml10毫升、30ml30毫升)
5.将30ml的杯子里的水倒入100的ml的杯子。(100ml90毫升、70ml10毫升、30ml0毫升)
6.将70ml的杯子里剩余的水倒入30的ml的杯子。(100ml90毫升、70ml0毫升、30ml10毫升)
7.将100ml的杯子里的水倒满70ml的杯子。(100ml20毫升、70ml70毫升、30ml10毫升)
8.将70ml的杯子里的水倒满30ml的杯子。(100ml20毫升、70ml50毫升、30ml30毫升)
9.将30ml的杯子里的水倒入100ml的杯子。(100ml50毫升、70ml50毫升、30ml0毫升)
扩展资料:
平均分的定义:
平均分与平均数不同,是分物时所用的一种思想。指在分物体的时候,要尽可能地分完,而且还要使每一份得到的数相等。
平均分的性质:
性质1:把要分的物体尽可能地分完。
性质2:要使每份所分得的数量都相等。
平均分的产生和思想:
在人们分物的时候,常常要求做到“公平”,为了公平而因而要求在“分”的时候,要“分”得“同样多”。“平均分”由此而产生。
(1)、分两次将30毫升水装满并倒入70毫升杯子(总共60毫升),再装满30毫升杯子(剩10毫升)。(2)、剩下的倒到另外一个容器中,把30毫升杯子将70毫升杯子装满(剩20毫升)。(3)将剩下的20毫升水倒到再另一个容器中,把70毫升杯子将30毫升杯子装满(剩40毫升)。
(4)、第一次剩的10毫升倒到70毫升杯子里就是50毫升了。
啥·····能把原题全部写出来吗?或者其他条件。 要不然你这样问的话,找两个50毫升的杯子很轻易就能分出来。感觉肯定没那么简单。
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