計算,能簡便要簡便,用遞等式計算,能簡便的要簡便60 40 3 n

時間 2022-08-03 19:10:11

1樓:匿名使用者

3.2×12.5×0.25

=12.5×0.8×0.25×4

=10×1

=10;

45×0.99

=0.45×99

=0.45×(100-1)

=45-0.45

=44.55;

0.1÷0.02+0.45×0.01

=5+0.0045

=5.0045;

40.5÷0.18-0.875×32

=225-28

=197;

(6.7-1.69÷1.3)×400

=6.7×400-0.13×400

=2680-52

=2628;

7.5×99.9

=7.5×(100-0.1)

=750-0.75

=749.25;

如果本題有什麼不明白可以追問,如果滿意記得采納如果有其他問題請採納本題後另發點選向我求助,答題不易,請諒解,謝謝。

祝學習進步

2樓:匿名使用者

3.2×12.5×0.25

=4*0.8*12.5*0.25

=1*10=10

45×0.99

=45*(1-0.01)

=45-0.45

=44.55

0.1÷0.02+0.45×0.01

=0.1*50+0.1*0.045

=0.1*(50+0.045)

=5.0045

40.5÷0.18-0.875×32

=90/2*5/9-7/8*32

=250-28

=222

(6.7-1.69÷1.3)×400

=(6.7-1.3)*400

=5.4*400

=2160

7.5×99.9

=7.5*(100-0.1)

=750-0.75

=749.25

用遞等式計算,能簡便的要簡便60+40×3 &n...

3樓:天堂罪嗕膃幟殥

(dao1)60+40×3

=60+120

=180;

(版2)權125-25÷5

=125-5

=120;

(3)1100÷25÷4

=1100÷(25×4)

=1100÷100

=11;

(4)672÷(24-12)

=672÷12

=56;

(5)120+78÷13

=120+6

=126;

(6)9000-271-729

=9000-(271+729)

=9000-1000

=8000.

28-7+11.3x0.5,測試計算能簡便的要簡便運算。

4樓:使用者名稱用

28-7+11.3x0.5計算過程如下

28-7+11.3x0.5

=21+(11+0.3)×0.5

=21+5.5+0.15

=26.65

如滿意請採納

5樓:匿名使用者

簡便運算為:11.3變成11+0.3

=21+(11+0.3)×0.5乘法分配律=21+11×0.5+0.5×0.3

=21+5.5+0.15

=26.5+0.15

=26.65

計算下面各題能簡便的要簡便28.5x10.1等於多少?

6樓:

28.5x(10+0.1)=285+2.85=287.85這題結果是二百八十七點八五

7樓:

28.5×10.1

=28.5×(10+0.1)

=285+2.85

=287.85

8樓:52個星期天

28.5×10.1

=28.5×(10+0.1)

=28.5×10+28.5x0.1

=285+2.85

=287.85

9樓:

28.5x10.1=28.5x(10+0.1)=285+2.85=287.85

能簡便的要簡便計算103*0.25?

10樓:二聰

103*0.25

=(100+3)* 1/4

=100* 1/4+3/4

=25+3/4

=25又3/4

11樓:仰望北斗

原式=(100+3)x0.25

=100x0.25+3x0.25

=25+0.72

=25.75

12樓:激情

103ⅹ0.25

=103x1/4

=25.75

13樓:網上招開

103×0.25簡便方法如下:

=(100+3)x0.25

=100x0.25+3x0.25

=25+0.75

=25.75

一、脫式計算。(能簡便的要簡便) (0.2+6.37÷0.7)×0.5

14樓:匿名使用者

(0.2+6.37÷0.7)×

0.5=0.2×0.5+6.37÷0.7×0.5=0.1+9.1×0.5

=0.1+4.55

=4.65

5.7×2.9+4.3×2.9

=(5.7+4.3) ×2.9

=10×2.9

=291.6×1.25×2.5

=2×2.5

=510.1×4.8

=(10+0.1)×4.8

=10×4.8+0.1×4.8

=48+0.48

=48.48

15樓:匿名使用者

親,先把我列入滿意答案,再告訴你怎麼做?

列遞等式計算(能簡便的要用簡便方法計算)800-600÷20 18×(84-48)3...

16樓:匿名使用者

解答:解:(1)800-600÷20

=800-30

=770;

(2)18×(84-48)

=18×36

=648;

(3)35×18

=35×2×9

=630;

(4)329+186+14

=329+(186+14)

=329+200

=529;

(5)25×37×4

=25×4×37

=3700;

(6)720÷16÷5

=720÷(16×5)

=720÷90=8.

遞等式計算,能簡便的要簡便

17樓:★魯魯修

(1)25×32×0.25

=25×4×2×4×0.25

=(25×4)×(4×0.25)×2

=100×1×2

=200;

(2)0.25×(0.4+40)

=0.25×0.4+40×0.25

=0.1+10

=10.1;

(3)0.67+1.28+9.33+0.72=(0.67+9.33)+(1.28+0.72)=10+2

=12;

(4)3.18-(0.33+1.18)

=3.18-0.33-1.18

=(3.18-1.18)-0.33

=2-0.33

=1.67;

(5)6.3÷35

=6.3÷(7×5)

=(6.3÷7)÷5

=0.9÷5

=0.18;

(6)[1-(0.5-0.25)]×0.6=[1-0.25]×0.6

=0.75×0.6

=0.45;

(7)7.8×0.9+0.78

=0.78×9+0.78

=0.78×(9+1)

=0.78×10

=7.8;

(8)1.9-1.9×(1.9-1.9)

=1.9-1.9×0

=1.9-0

=1.9.

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