[mimishand]

第一題:
49-13=？

40-10=30
9-3=6
30+6=36

共需三道計算式



第二題:
43-19=？

40-10=30
13-9=4
30-10=20
20+4=24

共需四道計算式


第三題:
493-199=？

共需n道計算式


第三題:
4003-1182=？

共需n*2道計算式



聰明的小孩子，若是用直式計算，從個位數計算起，只要教會他二位數計算方式，他就
能推到三位數、四位數.....

現在的小孩子，要計算三位數以上的加減法，須要算半天的時間，還會算錯！

~哈 ~哈 ~哈
~哈 ~哈 ~哈
~哈 ~哈 ~哈



題目: 2又3/4 除以 6

正常算法:
2又3/4 = 11/4
11/4 除以 6 = 11/24


建構式(賤狗式) 算法:
100 * 2又3/4 = 275
275 除以 6 = 45又5/6
45 除以 100 = 45/100
5/6 除以 100 = 5/600

45/100 + 5/600
=270/600 + 5/600
=275/600 (化簡後為11/24)

7道算式還得不到 11/24


大家不要笑！

我本來以為賤狗式數學是更快的計算方式，誰知道深入瞭解後就是這個樣子，連2位數
加減法都要寫3-6道計算式子，你們有讀小學的小朋友的話，千萬要自己教，不然這種
算法被定型時，他的計算能力會變的奇差無比。

[KCL]

現在都計算機了 :shakehead

有些人連個位數都需要計算機呢

很可悲

[-AJ-]

+_+

[CK]

i saw that in the news.............

the person who invented and implemented this said.......

"math is about understanding, not about arithmetic"

made sense in some respect especially in post-secondary math..........

HOWEVER, arithmetic is the BASIC of math........most ppl can do simple arithmetic like 67-38 in matter of seconds. however, that new system will probably take minutes?! this system is ridiculing the human brain. :shakehead

[-AJ-]

put in one sentence...

people think too much

+_____+"

[阿七]

有好有壞吧...

看...老外也是那樣學...所以被我們笑...:biglaugh:

為了台灣的未來...還是別搞了吧!!!:shakehead

[劍嶽]

i have not think this method to find the ans ar

[teppei]

well... it's good to understand the math structure
computer uses binomial numbers to do its math... if our brain is fast enough to operate as a computer, I think that structural math method is good...

but we are not as stupid as a computer, we can do math for more than one digit, and we are not as stupid as a white man :biglaugh: so I like the old way~

[Allen]

一面學印度人練瑜伽一面學數學悟性會比較高吧~

[阿苦]

最初由 -AJ- 發表
put in one sentence...

people think too much

+_____+"

Haha~ good one :biglaugh: