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第184章 现在你是一次就做出来了,给你点赞!(1 / 2)

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“那有一个可以让你感觉过程很好玩的,那就是……”

“是什么?快说呗。”小胖央求道。

“是做数学题呀,每次我心情不好的时候都会做数学题。”小女孩认真滴说。

“这能行吗?”

“你知道数学的历史吗?”

“不知道,你给介绍一下。”

“其实数学来源于生活,最开始就是为了把自己的食物数量数清楚了,比如几条鱼,跟别人换几个石头斧子等,当然那时候的数字都是与具体的食物联系到一起,非常形象的,比如一个太阳比作1。四个爪子的鸡就是表示4.”

那时候,扳着手指数数量,有时候因为数量太大,还得找帮手,借用他们的手指一起计数。

为了记录打猎什么时候回家,记录什么时候给播种,不然天黑了还不回去,会被野兽围攻。

到时候不播种,种的庄稼就长不好,没有好的收成。这些都逼着我们的祖先去摸索数学计数的方法。

当然,有时候,你会感觉到枯燥,那是害怕困难的表现,相信我,只要不害怕困难,见到难题就上,就像吃有嚼劲的馒头一样。你就会感受到这个过程带来的成就和长期的愉悦感。

真的吗?

那我想试一试。

好吧,那就请看看下面这道题目:

讲8拆成3个自然数的和,共有几种不同的方法呢?

算一算,可以分成第一种:0+0+8=8,第二种:0+1+7=8,第三种:0+2+6=8,第四种:0+3+5=8,第五种:0+4+4=8,第六种:0+5+3=8.

不对了,第四种和第六种是相同的方法。

那第六种是:1+1+6=8,第七种是:1+2+5等于8,第八种是:1+3+4等于8;第九种是:2+2+4等于8;第十种是:2+3+3等于8.

一共就这十种方法吧。对不对?

你还真聪明的,我开始还做不出来,现在你是一次就做出来了。给你点赞!

我现在感觉心情很好了,谢谢你!小胖高兴地说。

再给出几道题吧!

好的,听题目:有甲乙两个仓库,每个仓库平均储存粮食32.5吨。甲仓的存粮吨数比乙仓的4倍少5吨,甲、乙两仓各储存粮食多少吨?

先告诉你解题思路:

根据甲仓的存粮吨数比乙仓的4倍少5吨,可知甲仓的存粮如果增加5吨,它的存粮吨数就是乙仓的4倍,那样总存粮数也要增加5吨。若把乙仓存粮吨数看作1倍,总存粮吨数就是(4+1)倍,由此便可求出甲、乙两仓存粮吨数。

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