1樓:匿名使用者
(12分之7-8分之3)×24-9分之5
=7/12x24-3/8x24-5/9
=14-9-5/9
=5-5/9
=4又9分之4
32分之9÷[4分之3-(16分之7-4分之1)]=9/21÷(3/4-7/16+1/4)
=9/21÷(3/4+1/4-7/16)
=9/21÷(1-7/16)
=9/21÷9/16
==9/21x16/9
=16/21
14分之9÷(6分之5-4分之3)×24分之7=9/14÷(10/12-9/12)×7/24=9/14÷1/12×7/24
=9/14×(12×7/24)
=9/14×7/2
=9/4
16分之5×7分之4+1÷5分之16+7分之3×16分之5=5/16x4/7+1x5/16+3/7x5/16=5/16x(4/7+1+3/7)
=5/16x(4/7+3/7+1)
=5/16x2
=5/8
脫式計算,能簡便的要簡便計算。
2樓:匿名使用者
2006×(2006÷2007)
=2007×(2006÷2007)—1×(2006÷2007)=2006—2006÷2007
=2005又2007分之一
3.6×10.2的簡便脫式計算
3樓:
3.6x10.2
=3.6x10+3.6x0.2
=36+0.72
=36.72
小數的乘法計算法則:
先按照整數乘法的計算法則算出積,再看因數中共有幾位小數,就從積的右邊起數出幾位,點上小數點;如果位數不夠,就用"0"補足。
1、一般情況下,四則運算的計算順序是:有括號時,先算括號裡面的;只有同一級運算時,從左往右;含有兩級運算,先算乘除後算加減。
2、由於有的計算題具有它自身的特徵,這時運用運算定律,可以使計算過程簡單,同時又不容易出錯。
加法交換律:a+b=b+a
乘法交換律:a×b=b×a
加法結合律:(a+b)+c=a+(b+c)乘法結合律:(a×b)×c=a×(b×c)
4樓:義明智
3.6x10.2
=3.6x10+3.6x0.2
=36+0.72
=36.72
您好,答題不易
如有幫助請採納,謝謝
5樓:瑞春楓
36.6x10.2用簡便方法怎麼計算?
6樓:
=3.6×(10+0.2)
=3.6×10+3.6×0.2
=36+072
=36.72
脫式計算。能簡便的要簡便運算。
7樓:anan_可柔
2.87×〔6.3-2.3〕
=2.87×4.0
=11.48
54.7-45.3÷15
=54.7-3.02
=51.68
2.008×1999+2.008
=2.008×(1999+1)
=2.008×2000
=4016
10.8÷〖〔5.28-1.68〕×0.3〗0.5=10.8÷(3.6×0.3)×0.5
=10.8÷1.08×0.5
=10×0.5
=53.69÷〔1.23×0.5〕
=3.69÷1.23÷0.5
=3÷0.5
=6應該是這樣,希望我的答案對你有幫助!
8樓:3只漢字
2.87×〔6.3-2.3〕
=2.87×4.0
=11.48
54.7-45.3÷15
=54.7-3.02
=51.68
2.008×1999+2.008
=4013.992+2.008
=4016
10.8÷〖〔5.28-1.68〕×0.3〗0.5=10.8÷(3.6×0.3)×0.5
=10.8÷1.08×0.5
=10×0.5
=53.69÷〔1.23×0.5〕
=3.69÷0.615
=6。。。也許我誤解lz的意思了....
9樓:
2.87×〔6.3-2.3〕
=2.87×4.0
=11.48
54.7-45.3÷15
=54.7-3.02
=51.68
2.008×1999+2.008
=2.008×(1999+1)
=2.008×2000
=4016
10.8÷〖〔5.28-1.68〕×0.3〗0.5=10.8÷(3.6×0.3)×0.5
=10.8÷1.08×0.5
=10×0.5
=53.69÷〔1.23×0.5〕
=3.69÷1.23÷0.5
=3÷0.5
=6僅供參考
10樓:我是魔人我怕誰
2.87×〔6.3-2.3〕
=(3-0.13)×4
=12-0.13×4
=12-0.52
=11.48
54.7-45.3÷15
=54.7-(45+0.3)\15
=54.7-45\15-0.3\15
=54.7-3-0.02
=51.68
2.008×1999+2.008
=2.008*(1999+1)
=2.008*2000
=4016
10.8÷〖〔5.28-1.
68〕×0.3〗0.5=10.
8*0.3*0.5\[(5+0.
28)-(2-0.32)]=10.8\(3.
6*0.3)*0.5
=10.8\1.08*0.5
=10*0.5
=53.69÷〔1.23×0.5〕
=3*1.23\(1.23*0.5)
=3\0.5=6
脫式計算用簡便計算
11樓:匿名使用者
脫式計算用簡便運算來計算。這是可以的。
12樓:
大家lol啊得得得呃呃呃呃
脫式計算,能簡便的用簡便方法計算(要過程)
13樓:e調小七
(bai1)7488÷36*16
=208*16
=3328
(du2)5/11+5/8+6/11+3/8=(5/11+6/11)+(5/8+3/8)=1+1
=2(3)(5.4-2.4÷zhi3)*0.5=(5.4-0.8)/0.5
=4.6/0.5
=9.2(4)
1÷(3/8+1/12)÷
dao9/22
=1÷11/24÷9/22
=1×24/11×22/9
=16/3
(5)4/9*【0.75-(7/16-0.25)】=4/9×【內0.75-7/16+0.25】=4/9×【1-7/16】
=4/9×9/16
=1/4
(6)1985/2012*2013
=1985/2012×(2012+1)
=1985/2012×2012+1985/2012×1=1985+1985/2012
=1985又容1985/2012
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