知识大全 用脱式计算下面各题(能简算的要简算). 6760÷13+17×25 0.25+57+6.75+27 3763÷7+2663×17 63÷[3

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用脱式计算下面各题(能简算的要简算). 6760÷13+17×25 0.25+57+6.75+27 3763÷7+2663×17 63÷[3

(1)6760÷13+17×25,
=520+425,
=945;

(2)0.25+

5
7

+6.75+

2
7


=(0.25+6.75)+(

5
7

+

2
7

),
=7+1,
=8;

(3)

37
63

÷7+

26
63

×

1
7


=(

37
63

+

26
63

)×

1
7


=1×

1
7


=

1
7

(4)63÷[

3
5

×(0.7+

4
5

)],
=63÷[

3
5

×1.5],
=63÷0.9,
=70.

计算下面各题,能简算的要简算. 8 17 ÷23+ 1 23 × 9 17 0.25

8
17
÷23+
1
23

×

9
17


=

8
17

×

1
23

+

1
23

×

9
17


=(

8
17

+

9
17

)×

1
23


= 1×

1
23


=

1
23

②0.25×1.25×32,
=0.25×1.25×8×4,
=(0.25×4)×(1.25×8),
=1×10,
=10;

③3.6-2.8+7.4-7.2,
=3.6+7.4-(2.8+7.2),
=11-10,
=1;

④41×101,
=41×(100+1),
=41×100+41×1,
=4100+41,
=4141.

计算,能简算的要简算 (1)4.82-5.2÷0.8×0.6  (2)125×32 (3)6760÷13+17×25 (4

(1)4.82-5.2÷0.8×0.6
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;

(2)125×32
=125×8×4,
=1000×4,
=4000;

(3)6760÷13+17×25
=520+425,
=945;

(4)57.5-4.25-15.75
=57.5-(4.25+15.75),
=57.5-20,
=37.5;

(5)

5
7

×16.31-

5
7

×2.31
=

5
7

×(16.31-2.31),
=

5
7

×14,
=10.

计算下面各题,能简算的要简算:(45+14)÷73+7102536×45+1136÷5498+99×986760÷13+17×2525.12-7.32

(1)(

4
5

+

1
4

)÷

7
3

+

7
10

=

21
20

÷

7
3

+

7
10

=

9
20

+

7
10

=1

3
20

(2)

25
36

×

4
5

+

11
36

÷

5
4

=(

25
36

+

11
36

)×

4
5

=1×

4
5

=

4
5

(3)98+99×98
=(1+99)×98
=100×98
=9800;

(4)6760÷13+17×25
=520+425
=945;

(5)25.12-7.32-2.68
=25.12-(7.32+2.68)
=25.12-10
=15.12.

计算下面各题.(能简算的要简算)85-338÷916×23÷(45-815)27×34+0.25×270.6×25%+13×4.

(1)85-3

3
8

÷9
=85-

27
8

×

1
9


=85-

3
8


=84

5
8

(2)

1
6

×

2
3

÷(

4
5

-

8
15


=

1
6

×

2
3

÷

4
15


=

1
9

×

15
4


=

5
12

(3)

2
7

×

3
4

+0.25×

2
7

=

2
7

×

3
4

+

1
4

×

2
7


=(

3
4

+

1
4

)×

2
7


=1×

2
7


=

2
7

(4)0.6×25%+

1
3

×4
=

3
5

×

1
4

+

计算下面各题,能简算的要简算.575-75÷25×427×96+27×3+27

(1)575-75÷25×4,
=575-3×4,
=575-12,
=563;

(2)27×96+27×3+27,
=27×(96+3+1),
=27×100,
=2700.

用递等式计算下面各题:(能简算的要简算,)0.125×0.25×32 &...

①0.125×0.25×32
=(0.125×8)×(0.25×4)
=1×1
=1

②4.2-1.38+5.8-3.62
=(4.2+5.8)-(3.62+1.38)
=10-5
=5

3
5

×8.8+0.6×

1
5

+60%
=0.6×(8.8+

1
5

+1)
=0.6×11
=6.6

④4-[3.75×(1.2-

1
3

)+

3
4

]
=4-[3.75×1.2-3.75×

1
3

+0.75]
=4-[4.5-1.25+0.75]
=4-[3.25+0.75]
=4-4
=0

计算下列各题.(能简算的要简算) 17 24 × 3 4 + 17 24 ÷4 1


(1)
17
24
×
3
4

+

17
24

÷4 ,
=

17
24

×

3
4

+

17
24

×

1
4


=

17
24

×(

3
4

+

1
4

) ,
=

17
24

×1,
=

17
24

(2)

1
2

×3.2+5.6×0.5+1.2×50% ,
=0.5×3.2+5.6×0.5+1.2×0.5,
=0.5×(3.2+5.6+1.2),
=0.5×10,
=5;

(3) 510÷[42×(

5
6

-

3
7

)] ,
= 510÷[42×

5
6

-42×

3
7

] ,
=510÷[35-18],
=510÷17,
=30;

(4)

15
16

+(

7
16

-

1
4

1
2


=

15
16

+

3
16

÷

1
2


=

15
16

+

3
8


=

21
16

计算下面各题,能简算的要简算 480+27×8 &nb...

(1)480+27×8
=480+216
=696;

(2)15.7-2.17-1.83
=15.7-(2.17+1.83)
=15.7-4
=11.7;

(3)46×101-46
=46×(101-1)
=46×100
=4600;

(4)(

5
6

-

1
3

)×(

5
8

÷

1
4


=

1
2

×

5
2

=

5
4

(5)24×(

1
4

+

1
6

-

1
3


=24×

1
4

+24×

1
6

-24×

1
3

=6+4-8
=10-8
=2;

(6)[1-(

3
8

+

1
4

)]÷

1
4

=[1-

5
8

1
4

=

3
8

÷

1
4

=

3
2

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