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【319010】【详解】二年级(上)第11讲 整数分拆初步

时间:2025-01-07 11:01:44 作者: 字数:6077字
简介:
试题简介

考察范围:本试卷为“整数分拆初步”专题练习,主要考察学生通过逻辑推理和数学运算解决整数分拆问题的能力,包括简单的分拆、多条件限制的分拆、分拆的有序性等。

难易程度:整体难度适中。基础题目(如简单的整数分拆)较为容易,主要帮助学生掌握分拆的基本方法;部分题目涉及复杂的逻辑推理(如多条件限制的分拆问题),需要学生具备较强的逻辑思维能力和分析能力。

试题亮点:题目设计形式多样,通过有趣的整数分拆问题(如分篮球、分蛋糕、分树叶等)激发学生的学习兴趣。同时,题目注重培养学生的逻辑推理能力和数学运算能力,帮助学生掌握通过逻辑推理解决复杂问题的方法。

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第十一讲 整数分拆初步

  1. 例题1

答案:8

详解:整数分拆一定要按照三步曲来做,第一步:拆谁,本题是拆10;第二步:分成两种不同的对象;第三步:限制条件,本题限制条件是篮球和足球不一样多.并且由于已经买回来了篮球和足球,说明都不能为0. 从小到大进行分拆,这样就能不重不漏了.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> 8种情况.

 

 

  1. 例题2

答案:6

详解:三步曲:第一步:拆10;第二步:分3人;第三步:限制条件是每个人都要有,就说明都不能为0,并且汤汤每次都固定拿3块.本题汤汤拿走以后,实际上就是将剩下的分给2个人,还是从小到大进行拆分.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> 6种情况.

 

  1. 例题3

答案:21

详解:三步曲:第一步:拆8;第二步:分3个不同房间;第三步:限制条件是每个房子都要有篮球,就说明都不能为0,那么让第一个房间每次都固定,然后将剩下的给第二个房间和第三个房间进行从小到大进行拆分.当这种情况全部拆分完后,让第一个房间的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

 

  1. 例题4

答案:10

详解:三步曲:第一步:拆12;第二步:分3人;第三步:限制条件是每位小朋友至少分到3块,就说明从3开始分拆,让第一个小朋友每次都固定.当这种情况全部拆分完后,让第一个小朋友的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

  1. 例题5

答案:9

详解:三步曲:第一步:拆8;第二步:分3人;第三步:限制条件是每个人都有桃子,而且丁丁分得的桃子数比阿呆少.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

 

  1. 例题6

答案:7

详解:吃一天:7

吃两天:25

34

43

52

吃三天:223

232

7种.

 

 

 

  1. 练习1

答案:6

简答:三步曲:第一步:拆8;第二步:分成两种不同的对象;第三步:限制条件是大汽车和小汽车不一样多,且由于已经买回来了大汽车和小汽车,就说明都不能为0.从小到大进行分拆,这样就能不重不漏了.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

6种情况.

 

 

  1. 练习2

答案:5

简答:三步曲:第一步:拆8;第二步:分给3个不同的盘子;第三步:限制条件是每个盘子里至少放1个梨,就说明都不能为0,中间的盘子要放2个梨.本题中间盘子确定以后,实际上就是将剩下的分给2个盘子,还是从小到大进行拆分.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

5种情况.

 

 

  1. 练习3

答案:15

简答:三步曲:第一步:拆7;第二步:分给3个不同的篮子;第三步:限制条件是每个篮子里面至少有1根棒棒糖,就说明都不能为0,那么让第一个篮子每次都固定,然后将剩下的给第二个篮子和第三个篮子进行从小到大进行拆分.当这种情况全部拆分完后,让第一个篮子的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

 

  1. 练习4

答案:15

简答:三步曲:第一步:拆10;第二步:分3天吃完,就意味着将10拆成3份;第三步:限制条件是每天至少吃2块,就说明从2开始分拆,让第一天每次都固定.当这种情况全部拆分完后,让第一天的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

 

  1. 作业1

答案:6

简答:三步曲:第一步:拆7;第二步:分成两种不同的对象;第三步:限制条件是苹果和香蕉不一样多,且由于已经买回来了苹果和香蕉,就说明都不能为0.从小到大进行分拆,这样就能不重不漏了.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

6种情况.

 

  1. 作业2

答案:6

简答:三步曲:第一步:拆11;第二步:分给3个不同的盒子;第三步:限制条件是每个盘子里至少放1块蛋糕,就说明都不能为0,第一个盒子里固定装4块.本题第一个盒子确定以后,实际上就是将剩下的分给2个盒子,还是从小到大进行拆分.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

6种情况.

 

  1. 作业3

答案:10

简答:三步曲:第一步:拆6;第二步:分给3个不同的盒子;第三步:限制条件是每个盒子里都要有笔,就说明都不能为0,那么让第一个盒子每次都固定,然后将剩下的给第二个盒子和第三个盒子进行从小到大进行拆分.当这种情况全部拆分完后,让第一个盒子的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

  1. 作业4

答案:10

简答:三步曲:第一步:拆9;第二步:分给3张不同的卡片,就意味着将9拆成3份;第三步:限制条件是每张卡片上至少要有2片树叶,就说明从2开始分拆,让第一张卡片每次都固定.当这种情况全部拆分完后,让第一张卡片的逐渐增加.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a> (种).

 

 

  1. 作业5

答案:6

简答:三步曲:第一步:拆7;第二步:分3天吃完;第三步:限制条件是每天至少吃1块,而且第一天吃得比第二天吃得多.

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

 <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>  <a href="/tags/29/" title="初步" class="c1" target="_blank">初步</a> <a href="/tags/191/" title="整数" class="c1" target="_blank">整数</a>

共有6种吃法.

 

 

 

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