1樓：凌月霜丶
4/5+3+2/3×4/5
=4/5*(1+2/3)+3
=4/5*5/3+3
=3+4/3
=13/3
（7/11-3/8）×88
=88*7/11-3/8*88
=56-33=23
六年級分數簡便運算,1/2÷4/5÷（2/9×3/8） （5/6-3/4)÷5/12÷9/5 3/7÷[5/7-(3/7+1/5)]
2樓：末世警醒
1/2÷4/5÷（2/9×3/8）
=1/2 x 5/4 x9/2 x 8/3=5/8 x 8/3 x 9/2
=5/3 x 9/2
=15/2
3樓：**1050187966樂
1.1/2÷4/5÷（2/9×3/8）
=1/2×5/4÷1/12
=5/8×12
=15/2
=7.5
2.（5/6-3/4)÷5/12÷9/5 3/7÷[5/7-(3/7+1/5)]
簡便運算：1/5*8÷4/5 3/5+1/2*4/5 5/6÷2/3÷5/6 1-7/9÷7/8
4樓：匿名使用者
1/5*8÷4/5
=(8/5)×(5/4)
=23/5+1/2*4/5
=3/5+2/5
=15/6÷2/3÷5/6
=(5/6)×(3/2)×(6/5)
=3/2
1-7/9÷7/8
=1-(7/9)×(8/7)
=1-8/9
=1/9
計算下面各題，能簡便計算的要簡便計算。 3/5+3/4-5/6 8/9+2/7+5/7 15/8-3/4-1/4 = = = = = =
5樓：吃葷的兔子
3/5+3/4-5/6 8/9+2/7+5/7 15/8-3/4-1/4
=36/60+45/60-50/60 =8/9+1 =15/8-1
=31/60 =17/9 =7/8
9/7-1/6+3/7 7/4-12/23-3/4 5-6(3/8+1/6)
= 12/7-1/6 = 1-12/23 =5-(9/4+1)
= 72/42-7/42 =11/23 =7/4
=65/42
用簡便演算法:2/3一5/6×3/10+3/2，7/4÷(2/3+1/2)x4/5，8/15÷9+1
6樓：兗礦興隆礦
2/3一5/6×3/10+3/2
=2/3-1/4+3/2
=（8-3+18）/12
=23/12
7/4÷(2/3+1/2)x4/5
=(7/4*4/5)/(7/6)
=7/5*6/7
=1.2
8/15÷9+1/9x7/15
=1/15*(8/9+7/9)
=1/15*15/9
=1/9
[4一(3/4一3/8)]×4/29
=[4-3/8]*4/29
=29/8*4/29
=1/2
9/3×2/3+4/5÷8/7簡便計算。
7樓：亍城療釩
4/7÷8/3+3/7?3/8 =4/7x3/8+3/7x3/8 =(4/7+3/7)x3/8 =1x3/8 =3/8 5/8÷7/9+3/8÷7/9 =(5/8+3/8)÷7/9 =1÷7/9 =9/7 5/6?7/13+6/13÷6/5+5/6 =5/6x7/13+7/13x5/6+5/6 =5/6x(7/13+6/13+1) =5/6x2 =5/3
1/6×2/3÷括號4/5-8/15括號等於多少簡便計算
8樓：妙酒
1/6×2/3÷（4/5-8/15）
=1/9÷4/15
=5/12
9樓：匿名使用者
(1/6)x(2/3)÷(4/5 - 8/15)=（1/9）÷(4/15)
=（1/9）x(15/4）
=5/12
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