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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,并写出主要的计算过程) 6.7×7.3+6.7×1.7+6.7 1.25×0.25×32

火烧 2023-03-18 07:51:36 1058
计算下面各题.(能简算的要简算,并写出主要的计算过程) 6.7×7.3+6.7×1.7+6.7 1.25×0.25×32 计算下面各题.(能简算的要简算,并写出主要的计算过程) 6.7×7.3+6.7

计算下面各题.(能简算的要简算,并写出主要的计算过程) 6.7×7.3+6.7×1.7+6.7 1.25×0.25×32  

计算下面各题.(能简算的要简算,并写出主要的计算过程) 6.7×7.3+6.7×1.7+6.7 1.25×0.25×32


(1)6.7×7.3+6.7×1.7+6.7,
=6.7×(7.3+1.7+1),
=6.7×10,
=67;

(2)1.25×0.25×32,
=1.25×0.25×(4×8),
=(1.25×8)×(0.25×4),
=10×1,
=10;

(3)21.36÷0.8-12.9,
=26.7-12.9,
=13.8;

(4)25.6-25.6×0.8,
=25.6×(1-0.8),
=25.6×0.2,
=5.12;

(5)7.65×101-7.65,
=7.65×(101-1),
=7.65×100,
=765;

(6)3.73÷2.5÷4,
=3.73÷(2.5×4),
=3.73÷10,
=0.373.

计算下面各题,能简算的要简算,并写出主要的计算过程.①7.8-8.75+2.2-1.25 &nb...

①7.8-8.75+2.2-1.25,
=(7.8+2.2)-(8.75+1.25),
=10-10,
=0;
②13.2÷(9.4-5)+5.32,
=13.2÷4.4+5.32,
=3+5.32,
=8.32;
③1-

3 7

-

4 7


=1-(

3 7

+

4 7

),
=1-1,
=0;

13 17

-(

5 17

+

1 10

),
=

13 17

-

5 17

?

1 10


=

8 17

-

1 10


=

63 170


1 5

+(

5 6

-

13 18

),
=

1 5

+(

15 18

?

13 18

),
=

1 5

+

1 9


=

14 45

计算下面各题,能简算要简算,并写出主要的计算过程.17.8-5.8-4.2 &nbs...

(1)17.8-5.8-4.2 
 
=17.8-(5.8+4.2)

=17.8-10

=7.8

(2)3.75×1.8+2.25×1.8

=(3.75+2.25)×1.8

=6×1.8

=10.8

(3)(9+0.25)×4

=9×4+0.25×4

=36+1

=37

(4)3.85×101-3.85
=(101-1)×3.85
=100×3.85
=385

(5)2.5×1.25×32    
=2.5×8×4×1.25
=(2.5×8)×(4×1.25)
=20×10
=200

(6)12.25-3.1+0.75-6.9
=(12.25+0.75)-(3.1+6.9)
=13-10
=3.

计算下面各题,能简算的要简算,并写出主要的简算过程.(1)9.06-2.68-0.32(2)(3.06÷0.25+2.76)×0

(1)9.06-2.68-0.32,
=9.06-(2.68+0.32),
=9.06-3,
=6.06;

(2)(3.06÷0.25+2.76)×0.2,
=(12.24+2.76)×0.2,
=15×0.2,
=3;

(3)18-(

3 5

+4÷

2 5

),
=18-(0.6+4×

5 2

),
=18-(0.6+10),
=18-10.6,
=7.4;

(4)2.7×1.25+5.3×125%,
=2.7×1.25+5.3×1.25,
=(2.7+5.3)×1.25,
=8×1.25,
=10.

计算下面各题,能简算的要写出简算过程0.4╳1.25╳8╳0.25

能简算的要写出简算过程0.4╳1.25╳8╳0.25
0.4╳1.25╳8╳0.25
=(0.4╳0.25)╳(1.25╳8)
=0.1╳10
=1

能简算要简算的题 计算下面各题.(能简算的要简算,并写出主要的计算过程) 6.7×7.3+6.7×1.7+6.7 1.25×0.25×32

计算下面各题,能简算的要简算.125×9.3×0.08 13.7×102-2×13.7 (6.7+6.7+6.7+6.7)×2.5 4.5÷

(1)125×9.3×0.08,
=125×0.08×9.3,
=10×9.3,
=93;

(2)13.7×102-2×13.7,
=13.7×(102-2),
=13.7×100,
=1370;

(3)(6.7+6.7+6.7+6.7)×2.5,
=6.7×4×2.5,
=6.7×(4×2.5),
=6.7×10,
=67;

(4)4.5÷[(27.8-25.3)×0.4],
=4.5÷[2.5×0.4],
=4.5÷1,
=4.5;

(5)0.096÷0.01+(75-28÷112),
=0.096÷0.01+(75-0.25),
=0.096÷0.01+74.75,
=9.6+74.75,
=84.35;

(6)90.8-(7.03-2.17)×4.5,
=90.8-4.86×4.5,
=90.8-21.87,
=68.93.

计算下面各题.(能简算的要简算) 38×7.3+27×3.8 32×1.25×0.25 4.5×(10

(1)38×7.3+27×3.8,
=38×7.3+2.7×38,
=38×(7.3+2.7),
=38×10,
=380;

(2)32×1.25×0.25,
=(4×8)×1.25×0.25,
=(4×0.25)×(8×1.25),
=1×10,
=10;

(3)4.5×(10.5-12.06÷1.5),
=4.5×(10.5-8.04),
=4.5×2.46,
=11.07;

(4)38.75-(24.5+8.75),
=38.75-24.5-8.75,
=38.75-8.75-24.5,
=30-24.5,
=5.5.

  
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