1楼:牢廷谦籍念
1、计算题:
解:1/3÷5/6÷16/15
=1/3×6/5×15/16=3/8
[1-(1/5+1/6)]÷1/12 =[1-11/30]×12=19/30×12=38/5
(5/6-3/4)÷(1/4-1/8)=1/12÷1/8=1/12×8=2/3
应用题:
解:30÷5/6×8/9=36×8/9=32(千克)答:丙筐梨的质量是32千克.
数学1.计算题,能简便的要简便计算。1/3÷5/6÷16/15 【1-(1/5+1/6)】÷1/12 ( 5/6-3/4)÷(1/4-1/8)
2楼:书语蝶暴磬
1、计算题:
解:1/3÷5/6÷16/15
=1/3×6/5×15/16=3/8
[1-(1/5+1/6)]÷1/12 =[1-11/30]×12=19/30×12=38/5
(5/6-3/4)÷(1/4-1/8)=1/12÷1/8=1/12×8=2/3
应用题:
解:30÷5/6×8/9=36×8/9=32(千克)答:丙筐梨的质量是32千克.
能简便计算的要简便计算4/9÷[5/6-(1/6+1/3)] 1/15*(1/3+1/12) 1/4÷(3-5/13-8/13)
3楼:匿名用户
4/9÷[5/6-(1/6+1/3)]
=4/9÷[5/6- 3/6]
=4/9×3
=4/3
1/15*(1/3+1/12)
=1/15*5/12
=1/36
1/4÷(3-5/13-8/13)
=1/4÷(3-1)
=1/8
望采纳。谢谢
4楼:匿名用户
1、4/9÷[5/6-(
1/6+1/3)]=4/9÷[5/6-1/6-1/3)]=4/9÷[2/3-1/3]=4/9÷1/3=4/3
2、1/15*(1/3+1/12)=1/15*(4/12+1/12)=1/15*5/12=1/36
3、1/4÷(3-5/13-8/13)=1/4÷[3-(5/13+8/13)]=1/4÷[3-1]=1/4÷2=1/8
简便计算!(5/6+3/4-1/2)÷1/24 16/11-(1/3÷11/15+1/5)
5楼:乐为人师
(5/6+3/4-1/2)÷1/24
=(5/6+3/4-1/2)×24
=5/6×24+3/4×24-1/2×24=20+18-12
=2616/11-(1/3÷11/15+1/5)=16/11-(5/11+1/5)
=16/11-5/11-1/5
=1-1/5
=4/5
计算下面各题,能简算的要简算。3/5÷6÷1/15速度!!
6楼:匿名用户
3/5÷6÷1/15
=3/5÷1/15÷6
=3/5x15÷6
=9÷6
=1.5
50×(3/10+1/5)
=50×(3/10+2/10)
=50×1/2
=25
3/8×4/7÷3/8×4/7
=3/8÷3/8×4/7×4/7
=1×4/7×4/7
=16/49
2/7÷8+5/7×1/8
=2/7×1/8+5/7×1/8
=(2/7+5/7)×1/8
=1×1/8
=1/8
15÷9/25×4/5
=15×4/5÷9/25
=12x25/9
=100/3
﹙13-3/10﹚÷3/5
=﹙130-3)/10x5/3
=127/10x5/3
=127/6
计算下面各题。(能简算的要简算) 1/3×5×2/5÷1/3 1/3×1/15+1
7楼:最美晴天小奕
你敢,很高兴为您解答:
1、解:
原式=5×2/5×1/3÷1/3
=5×2/5×1/3×3
=2×1
=22、解:
原式=1/3×(1/15+1/5)
=1/3×4/15
=4/45
3、解:
原式=3.7×6/5+1.3×6/5
=(3.7+1.3)×6/5
=5×6/5
=64、解:
原式=3/4-(6/7-1/4)×17/9=(3/4+1/4-7/16)×17/9
=9/16×17/9
17/16
计算下列各题,能简便的要简便计算 3 1 6 ÷(1+ 1 3 ×1 3 4 ) ( 1
8楼:手机用户
(1)31 6
÷(1+1 3
×13 4
),=31 6
÷(1+1 3
×7 4
),=31 6
÷(1+7
12),
=19 6
÷1912
,=19 6
×1219
,=2;
(2)(
1 15
+217
)×15×17,
=1 15
×15×17+2
17×15×17,
=17+30,
=47;
(3)(9.6-101 2
÷1.25)÷(11 3
×0.75),
=(9.6-21 2
÷5 4
)÷(4 3
×3 4
),=(9.6-21 2
×4 5
)÷1,
=(9.6-8.4)÷1,
=1.2;
(4)5.66×7.28-3.
16×3.16-3.16×4.
12,=5.66×7.28-3.
16×(3.16+4.12),=5.
66×7.28-3.16×7.
28,=(5.66-3.16)×7.
28,=2.5×7.28,
=18.2;
(5)2012×0.875+201.2×1.25,=2012×0.875+2012×0.125,=2012×(0.875+0.125),
=2012×1,
=2012;
(6)1
1×2+1
2×3+1
3×4+…+1
99×100
,=1-1 2
+1 2
-1 3
+1 3
-1 4
+…+1
99-1
100,
=1-1
100,
=99 100.
计算下面各题,能简便计算的用简便方法计算 2-6/13÷9/26 (1/3+1/4)×36 6/7×(4/5-2/3)÷1/5
9楼:数学新绿洲
2-6/13÷9/26
= 2- (6/13)×(26/9)
=2- 4/3
=2/3
.(1/3+1/4)×36
=(1/3)×36 +(1/4)×36
=12+9
=21.
6/7×(4/5-2/3)÷1/5
=(6/7)×(4/5 - 2/3)×5
=(6/7)×(4 - 10/3)
=(6/7)×(2/3)
=4/7
.3/4-3/4×4/7+9/7
=(3/4)×(1- 4/7)+
9/7=(3/4)×(3/7)+9/7
=(1/4)×(9/7)+ 9/7
=(1/4 +1)×(9/7)
=(5/4)×(9/7)
=45/28
=1又17/28
计算,能简便要简便。 12×(3/4+5/6) 1/12÷(5/6-2/3)-5/16 1/4+
10楼:新野旁观者
12×(3/4+5/6)
=12×3/4+12×5/6
=9+10
=191/12÷(5/6-2/3)-5/16=1÷(5/6×12-2/3×12)-5/16=1÷(10-8)-5/16
=1/2-5/16
=3/16
1/4+1/4÷1/3
=1/4+3/4=1
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