Categories: 教育

求解小六数学题

回复 痛过的人 的帖子

There are total 29 units of biscuits;
Small boxes contain 18 units;
Big boxes contain 11 units (29-18);
Each small  box contains ->18/14 = 9/7 units
Each big box contains ->11/7 units
10 pcs of biscuits ->11/7 units – 9/7 units=2/7units
1 unit-> 10*7/2=35 pcs
each small box contains->35*18/14 = 45 pcs

Answer: There were 45 pieces of biscuits in each small box.


回复 痛过的人 的帖子

不好意思,该一点。

There are total 29 units of biscuits(18/29 of the biscuits baked were packed  in small boxes);
Small boxes contain 18 units;
Big boxes contain 11 units (29-18);
Each small  box contains ->18/14 = 9/7 units
Each big box contains ->11/7 units
10 pcs of biscuits ->11/7 units – 9/7 units=2/7 units
1 unit-> 10*7/2=35 pcs
Each small box contains->35*9/7 = 45 pcs

Answer: There were 45 pieces of biscuits in each small box


回复 痛过的人 的帖子

这种类型的问题用“置换”法好理解一些
TOTAL BISCUITS:29u
14small boxes—18u
7 big boxes—11u=7 small boxes+70biscuits
21 small boxes=27u
2u—70biscuits
18u–630biscuits
each small box has 45 biscuits.


谢谢各位帮忙  理解  万分感激


简化一下题目,总数(A)、14小盒子个和7个大盒子 大家都除以7就等同于新总数(B)、2个小盒子和一个大盒子,
B的18/29装在小盒子里面,也就是意味着B的9/29装在一个小盒子里面,剩下一个大盒子装B的11/29,,
大盒子比小盒子多装B的2/29。所以B的2/29=10,B的1/29=5,
小盒子装B的9/29=5×9=45


好多小六的数学问题还满难的.


太厉害啦


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