数学1.计算题,能简便的要简便计算。

2020-11-23 06:34:48 字数 4861 阅读 1349

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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