1200/25=12*100/25=12*(100/25)=12*4=48
1200/25=(1200*4)/(25*4)=4800/100=48
B. 1200除以25簡便計算
I don『t know!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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C. 1200除以25用簡便
12乘以100除以25=12乘以4=48
D. 1200除25除8的簡便計算
1200除25除8
=1200÷(25*8)
=1200÷200
=6
E. 運用商不變的性質,用簡便方法計算下題1200除以25
1200/25=1200*4/25*4=4800/100=48
F. 1200除以25的豎式方法怎麼寫
1200除以25的豎式:
先從被除數的高位除起除數是2位數,就看被除數的前2位。
(6)1200除以25的簡便方法擴展閱讀
一、多位數乘一位數的豎式計算
1、相同數位對齊
2、用這個數分別去乘多位數每一個數位上的數,從個位數乘起,即從右往左乘
3、乘到哪一位就把積寫在哪一位數位對應的下面。
二、多位數乘兩位數
1、把數位較多的因數寫在上面,數位較少的寫在下面
2、下面的因數要與寫在上面的因數的數位要對齊
3、用第二個因數(即寫在下面的因數)的個位數與寫在上面的數的個位相乘,把相乘得到的積的末位寫在個位上,再與十位上的數相乘寫在十位……
4、要僅為的,哪一位的乘積滿幾十,就向前進幾,然後再繼續往下乘
5、再用寫在下面的因數的十位與寫在上面的因數的各個位數分別相乘,把相乘得到的積的末位寫在對應的十位上。
6、然後把每次乘得的數加起來。
G. 1200÷25簡便運算
1200÷25簡便運算過程如下:
1200÷25
=(1000+200)÷25
=1000÷25+200÷25
=40+8
=48
所以1200÷25簡便運算的最後結果是48。
(7)1200除以25的簡便方法擴展閱讀:
在進行簡便運算(四則運算)時,應注意運算符號(乘除和加減)和大、中、小括弧之間的關聯。不要越級運算,以免發生運算錯誤。
可利用以下幾種運演算法則進行簡便運算:
1、乘法分配律:ax(b+c)=axb+axc
2、乘法結合律:(a×b)×c=a×(b×c)
3、乘法交換律:a×b=b×a
4、加法交換律:a+b=b+a
5、加法結合律:(a+b)+c=a+(b+c)
H. 1200除以25簡便方法,謝謝
I. 1200除以25除的簡便計算
1200÷25
=1200×4÷25×4
=1200×4÷100
=4800
=48
或者:
1200÷25
=(1000+200)÷25
=1000÷25+200÷25
=40+8
=48
(9)1200除以25的簡便方法擴展閱讀:
乘、除法的簡便計算常用定律:
一、乘法:
1)乘法交換律:a*b=b*a;
2)乘法結合律:a*b*c=(a*b)*c=a*(b*c)
3)乘法分配律:(a+b)*c=a*c+b*c;(a-b)*c=a*c-b*c
二、除法:
1)商不變的性質即被除數與除數同乘以或同除以一個數(零除外),商不變。
a/b=(a*n)/(b*n)=(a/n)/(b/n)。
2)兩個數的和(差)除以一個數,可以用這個數分別去除這兩個數(在都能整除的情況下),再求兩個商的和(差)。
(a+b)/c=a/c+b/c;(a-b)/c=a/c-b/c。
J. 1200除以25簡算
1200÷25
=(1000+200)÷25
=1000÷25+200÷25
=40+8
=48