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能简算要简算的题 计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5.

火烧 2023-02-15 01:55:59 1061
计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5. 计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5.(1)0.75×1

计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5.  

计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5.

(1)0.75×1.3+75%×8.7,
=0.75×1.3+0.75×8.7,
=0.75×(1.3+8.7),
=0.75×10,
=7.5;

(2)3.2×25×12.5,
=0.4×8×25×1.25,
=(0.4×25)×(8×12.5),
=10×100,
=1000.

计算下面各题,能简算的要简算.10.6-(6.6+0.125÷12.5%)36÷[(8.7-

(1)10.6-(6.6+0.125÷12.5%)
=10.6-(6.6+0.125÷0.125)
=10.6-(6.6+1)
=10.6-7.6
=3

(2)36÷[(8.7-3.3)×3]
=36÷[5.4×3]
=36÷3÷5.4
=12÷5.4
=

20 9

(3)3.6×

3 8

+7.4×0.375
=3.6×

3 8

+7.4×

3 8

=(3.6+7.4)×

3 8

=11×

3 8

=

33 8

计算下面各题,能简算的要简算.5.95÷(1.2+0.5)×5 75÷(0.75×4)

(1)5.95÷(1.2+0.5)×5,
=5.95÷1.7×5,
=3.5×5,
=17.5;

(2)75÷(0.75×4),
=75÷3,
=25;

(3)0.8×0.68×125
=(0.8×125 )×0.68,
=100×0.68,
=68;

(4)73.5×0.1+7.35×9,
=7.35×1+7.35×9,
=7.35×(1+9),
=7.35×10,
=73.5;

计算下面各题,能简算的要简算.5.95÷(1.2+0.5)×5 75÷(0.75×4) 0

(1)5.95÷(1.2+0.5)×5,
=5.95÷1.7×5,
=3.5×5,
=17.5;

(2)75÷(0.75×4),
=75÷3,
=25;

(3)0.8×0.68×125
=(0.8×125)×0.68,
=100×0.68,
=68;

(4)73.5×0.1+7.35×9,
=7.35×1+7.35×9,
=7.35×(1+9),
=7.35×10,
=73.5;

计算下面各题,能简算的要简算.(1)12.5×19.95×0.4 &nb...

(1)12.5×19.95×0.4,
=12.5×0.4×19.95,
=5×19.55,
=97.75;

(2)

2 3

÷[(1?

1 2

1 4

],
=

2 3

÷[

1 2

÷

1 4

],
=

2 3

÷2,
=

1 3

计算下面各题(能简算的要简算).①4×0.8×2.5×12.5 &nbs...

①4×0.8×2.5×12.5,
=(4×2.5)×(0.8×12.5),
=10×10,
=100;

2 15

÷[1-(

1 5

+

1 3

)],
=

2 15

÷[1-

8 15

],
=

2 15

÷

7 15


=

2 7

③(2.8+3.85÷3.5)×4.6,
=(2.8+1.1)×4.6,
=3.9×4.6,
=17.94;

④6.5×1.83+0.17×6.5,
=6.5×(1.83+0.17),
=6.5×2,
=13;

⑤(

5 8

+

2 27

)×8+

11 27


=

5 8

×8+

2 27

×8+

11 27


=5+

16 27

+

11 27


=2+(

16 27

+

11 27

),
=2+1,
=3;

9 20

÷[

能简算要简算的题 计算下面各题(能简算的要简算) 0.75×1.3+75%×8.7 3.2×25×12.5.
3 2

×(0.4+

4 5

)],
=

9 20

÷[

3 2

×

6 5

],
=

9 20

÷

9 5


=

1 4

计算下面各题,能简算的要简算.(1)2300-450÷18×18 (2)0.8×1.6+8×0.84 (3)2.5×32×12.5.

(1)2300-450÷18×18,
=2300-450×(18÷18),
=2300-450×1,
=2300-450,
=1850;

(2)0.8×1.6+8×0.84,
=8×0.16+8×0.84,
=8×(0.16+0.84),
=8×1,
=8;

(3)2.5×32×12.5,
=2.5×4×8×12.5,
=(2.5×4)×(8×1.25),
=10×10,
=100.

计算下面各题,能简算的要简算.2.5×3.2×1.251.84÷2.3×0.242.4×3

(1)2.5×3.2×1.25
=2.5×4×0.8×1.25
=(2.5×4)×(0.8×1.25)
=10×1
=10;

(2)1.84÷2.3×0.24
=0.8×0.24
=0.129;

(3)2.4×3.5+6.5÷1.3
=84+5
=89;

(4)8.56×2.5+1.44×2.5
=(8.56+1.44)×2.5
=10×2.5
=25.

计算下面各题,能简算的要简算)9.2÷25%+0.4×8 &...

(1)9.2÷25%+0.4×8
=36.8+3.2
=40;
                        
(2)1

7 8

÷(1

7 8

-

3 4


=

15 8

×

8 9

=

5 3

(3)1-

1 2

-

1 6

-

1 12

-

1 20

-

1 30

=1-

1 2

-(

1 2

-

1 3

)-(

1 3

-

1 4

)-(

1 4

-

1 5

)-(

1 5

-

1 6


=1-

1 2

-

1 2

+

1 3

-

1 3

+

1 4

-

1 4

+

1 5

-

1 5

+

1 6

=

1 6

(4)(3.47+3.47÷

1 3

)×2.5
=(3.47+3.47×3)×2.5
=3.47×4×2.5
=3.47×(4×2.5)
=3.47×10
=34.7.

计算下面各题,能简算的要简算.25×44 6.4...

(1)25×44
=25×4×11
=100×11
=1100;

(2)6.45-0.58-1.42 
=6.45-(0.58+1.42)
=6.45-2
=4.45;

(3)12×(324-285)÷26
=12×39÷26
=468÷26
=18.

  
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