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五年级脱式计算简便运算的题 脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2

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脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2 脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2 ①( 11 12 - 3 4

脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2  

脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2

①(

11 12 -

3 4

)÷( 2-

1 2

),
=(

11 12

-

9 12

)÷

3 2


=

1 6

×

2 3


=

1 9


1 1×2

+

1 2×3

+

1 3×4

+

1 4×5

+

1 5×6

+

1 7×8


=(1-

1 2

)+(

1 2

-

1 3

)+(

1 3

-

1 4

)+(

1 4

-

1 5

)+(

1 5

-

1 6

)+(

1 7

-

1 8

),
=1 -

1 2

+

1 2

-

1 3

+

1 3

-

1 4

+

1 4

-

1 5

+

1 5

-

五年级脱式计算简便运算的题 脱式计算下面各题(能简算的要简算)①( 11 12 - 3 4 )÷( 2- 1 2
1 6

+

1 7

-

1 8


=1-

1 6

+

1 7

-

1 8


=

5 6

+

1 56


=

143 168


③(

5 7

-

4 21

)÷

5 21


=(

15 21

-

4 21

)×

21 5


=

11 21

×

21 5


=

11 5


=2

1 5


④30.8÷[14-(9.85+1.07)],
=30.8÷(14-10.92),
=30.8÷3.08,
=10.

用脱式计算下面各题(能简算的要简算). ( 1 12 + 1 8 )×24 3 4

①(

1 12 +

1 8

)×24,
=

1 12

×24+

1 8

×24,
=2+3,
=5;

3 4

×99+0.75,
=0.75×99+0.75,
=0.75×(99+1),
=0.75×100,
=75;

③2-

6 13

÷

9 26

-

2 3


=2-1

1 3

-

2 3


=2-(1

1 3

+

2 3

),
=2-2,
=0;

5 8

÷[

1 3

+(

5 6

-

3 4

)],
=

5 8

÷[

1 3

+

1 12

],
=

5 8

÷

5 12


=1.5.

计算下面各题,能简算的要简算.(1)772-317+128-283 (2)( 11 12 - 3 4 )÷

(1)772-317+128-283
=772+128-(317+283)
=900-600
=300;
(2)(

11 12 -

3 4

)÷(2-

1 2


=

1 6

÷

3 2

=

1 6

×

2 3

=

1 9


(3)(

1 4

+

1 6

+

5 12

)×36
=

1 4

×36+

1 6

×36+

5 12

×36
=9+6+15
=30;
(4)120÷[45×(1-

8 9

)]
=120÷[45×

1 9

]
=120÷5
=24.

计算下列各题,能简算的要简算.(1) 4 5 +( 3 8 - 1 4 )(2)2-

(1)

4 5 +(

3 8

-

1 4

),
=

4 5

+(

3 8

-

2 8

),
=

4 5

+

1 8


=

32 40

+

5 40


=

37 40

(2)2-

3 7

-

4 7


=2-(

3 7

+

4 7

),
=2-1,
=1;

(3)

5 8

-

1 3

+

5 12


=

15 24

-

8 24

+

10 24


=

7 24

+

10 24


=

17 24

(4)38.7-7.84÷1.4,
=38.7-5.6,
=33.1;

(5)

5 12

-(

1 12

-

1 2

),
=

5 12

-(

1 12

-

6 12

),
=

5 12

-(-

5 12

),
=

5 12

+

5 12


=

10 12


=

5 6

(6)8.8-2.5×1.8,
=8.8-4.5,
=4.3.

计算下面各题,能简算的要简算.(1)57- 3 11 - 8 11 (2)5.7×20%+ 1

(1)57-

3 11 -

8 11


=57-(

3 11

+

8 11

),
=57-1,
=56;

(2)5.7×20%+

1 5

×

3 10


=5.7×0.2+0.2×0.3,
=(5.7+0.3)×0.2,
=6×0.2,
=1.2;

(3)4.2÷[

7 8

×(1-

1 7

)],
=4.2÷[

7 8

×

6 7

],
=4.2÷

3 4


=4.2×

4 3


=5.6.

计算下面各题,能简算的要简算. ①2- 2 7 - 5 7 ② 5 8 -(


①2-

2 7 -

5 7


=2-(

2 7

+

5 7

),
=2-1,
=1;

5 8

-(

5 8

-

1 2

),
=

5 8

-

5 8

+

1 2


=

1 2

4 3

-

1 8

+

7 12


=

29 24

+

7 12


=

43 24

④6-(

3 4

-

2 5

),
=6-

7 20


=5

13 20

脱式计算下面各题(能简算的要简算)(1)2.8+7.2×3.2(2)10.5÷(4.2÷2)×0.62(3)2.5×

(1)2.8+7.2×3.2
=2.8+23.04
=25.84

(2)10.5÷(4.2÷2)×0.62
=10.5÷2.1×0.62
=5×0.62
=3.1

(3)2.5×(4+0.4)
=2.5×4+2.5×0.4
=10+1
=11

(4)9.4×5.5+4.5×9.4
=9.4×(5.5+4.5)
=9.4×10
=94

计算下面各题,能简算的简算.① 5 12 ÷ 15 21 + 1 4 × 3 5

5 12 ÷

15 21

+

1 4

×

3 5


=

5 12

×

21 15

+

1 4

×

3 5


=

7 12

+

3 20


=

11 15

②58×102,
=58×(100+2),
=58×100+58×2,
=5800+116,
=5916;

9 18

×[

3 16

-(

7 16

-

1 4

)],
=

9 18

×[

3 16

-

3 16

],
=

9 18

×0.
=0;

④0.888×125×73+999×73,
=[(0.8+0.08+0.008)×125]×73+999×73,
=[0.8×125+0.08×125+0.008×125]×73+999×73,
=[100+10+1]×73+999×73,
=111×73+999×73,
=(111+999)×73,
=1110×73,
=81030.

计算下面各题(能简算的要简算).807×99+807 [1-( 1 2 - 1 4 )]× 2

(1)807×99+807,
=807×(99+1),
=807×100,
=80700;

(2)[1-(

1 2

-

1 4

)]×

2 5


=[1-

1 4

2 5


=

3 4

×

2 5


=

3 10

(3)20.11×83+1.7×201.1,
=20.11×83+17×20.11,
=20.11×(83+17),
=20.11×100,
=2011;

(4)

6 5

×

3 8

+

5 8

÷

5 6


=

6 5

× (

3 8

+

5 8

),
=

6 5

× 1,
=

6 5

  
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