数学脱式计算,简便运算(两步以上)要答案一定要带答案,我要把-查字典问答网
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来自陈福明的问题

  数学脱式计算,简便运算(两步以上)要答案一定要带答案,我要把它做一个练习册,要答案才能分析,谢谢了!要答案!,最好多写些,有急用!

  数学脱式计算,简便运算(两步以上)要答案

  一定要带答案,我要把它做一个练习册,要答案才能分析,谢谢了!要答案!,最好多写些,有急用!

5回答
2020-01-02 12:49
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李曙光

  0.4×125×25×0.8

  =(0.4×25)×(125×0.8)

  =10×100=1000

  1.25×(8+10)

  =1.25×8+1.25×10

  =10+12.5=22.5

  9123-(123+8.8)

  =9123-123-8.8

  =9000-8.8

  =8991.2

  1.24×8.3+8.3×1.76

  =8.3×(1.24+1.76)

  =8.3×3=24.9

  9999×1001

  =9999×(1000+1)

  =9999×1000+9999×1

  =10008999

  14.8×6.3-6.3×6.5+8.3×3.7

  =(14.8-6.5)×6.3+8.3×3.7

  =8.3×6.3+8.3×3.7

  8.3×(6.3+3.7)

  =8.3×10

  =83

  1.24+0.78+8.76

  =(1.24+8.76)+0.78

  =10+0.78

  =10.78

  933-157-43

  =933-(157+43)

  =933-200

  =733

  4821-998

  =4821-1000+2

  =3823

  I32×125×25

  =4×8×125×25

  =(4×25)×(8×125)

  =100×1000

  =100000

  9048÷268

  =(2600+2600+2600+1248)÷26

  =2600÷26+2600÷26+2600÷26+1248÷269

  =100+100+100+48

  =348

  2881÷43

  =(1290+1591)÷434

  =1290÷43+1591÷43

  =30+37

  3.2×42.3×3.75-12.5×0.423×16

  =3.2×42.3×3.75-1.25×42.3×1.6

  =42.3×(3.2×3.75-1.25×1.6)

  =42.3×(4×0.8×3.75-1.25×4×0.4)

  =42.3×(4×0.4×2×3.75-1.25×4×0.4)

  =42.3×(4x0.4x7.5-1.25x4x0.4)

  =42.3×[4×0.4×(7.5-1.25)]

  =42.3×[4×0.4×6.25]

  =42.3×(4×2.5)

  =4237

  1.8+18÷1.5-0.5×0.3

  =1.8+12-0.15

  =13.8-0.15

  =13.65

  6.5×8+3.5×8-47

  =52+28-47

  =80-47

  (80-9.8)×5分之2-1.32

  =70.2X2/5-1.32

  =28.08-1.32

  =26.76

  8×7分之4÷[1÷(3.2-2.95)]

  =8×4/7÷[1÷0.25]

  =8×4/7÷4

  =8/7

  2700×(506-499)÷900

  =2700×7÷900

  =18900÷900

  =21

  33.02-(148.4-90.85)÷2.5

  =33.02-57.55÷2.5

  =33.02-23.02

  =10

  (1÷1-1)÷5.1

  =(1-1)÷5.1

  =0÷5.1

  =0

  18.1+(3-0.299÷0.23)×1

  =18.1+1.7×1

  =18.1+1.7

  =19.8

  1.(1/69+2/71)乘23+25除以71

  =1/69*23+2/71*23+25/71

  =1/3+(46/71+25/71)

  =1/3+1

  =4/3

  2.(1+1/2)乘(1-1/2)乘(1+1/3)乘(1-1/3)乘.乘(1+1/9)乘(1-1/9)

  =3/2*1/2*4/3*2/3...*10/9*8/9

  =1/2*10/9(中间的都约去了)

  =5/9

  3.1/2乘3+1/3乘4+.+1/19乘20

  =1/2-1/3+1/3-1/4+...+1/19-1/20

  =1/2-1/20

  =9/20

  4.1/27+505/2727+131313/272727

  =1/27+5*101/(27*101)+13*10101/(27*10101)

  =1/27+5/27+13/27

  =19/27

  5.100-98+96-94+.+4-2

  =(100-98)+(96-94)+...(4-2)

  =2+2+...+2(共有25个)

  =2*25

  =50

  1.3/7×49/9-4/3=7/3-4/3=3/3=1

  2.8/9×15/36+1/27=10/27+1/27=11/27

  3.12×5/6–2/9×3=10-2/3=30/3-2/3=28/3

  4.8×5/4+1/4=10+1/4=40/4+1/4=41/4

  5.6÷3/8–3/8÷6=6*8/3-3/8*1/6=16-1/16=155/16

  6.4/7×5/9+3/7×5/9=1/7*(4*5/9+3)=1/7*47/9=47/63

  7.5/2-(3/2+4/5)=5/2-3/2-4/5=1-4/5=5/5-4/5=

2020-01-02 12:53:38
陈福明

  这个我写过还有没有别的?

2020-01-02 12:55:54
李曙光

  亲,我又找了一些没有答案的自己算出来的,还有一些是自己编的,不知道您写过没有呢

  77-46+32

  =31+32

  =63

  65-38+26

  =27+26

  =53

  79+19-56

  =98-56

  =42

  69-(39-23)

  =69-16

  =50

  (2+7)×8

  =9x8

  =72

  (58-34)÷8

  =24÷8

  =3

  84-27+16

  =57+16

  =73

  4+27-16

  =31-16

  =15

  99+(25-24)

  =99+1

  =100

  1+14-15

  =15-15

  =0

  2+8+30

  =10+30

  =40

  36÷6+4

  =6+4

  =10

  7x7+1

  =49+1

  =50

  2x4x5

  =8x5

  =40

  27+3+25

  =30+25

  =55

  100-3x33

  =100-99

  =1

  55÷11+5

  =5+5

  =10

  67+3+20

  =70+20

  =90

  (59+1)÷2

  =60÷2

  =30

  98+2-100

  =100-100

  =0

  520-20+500

  =500+500

  =1000

  6666÷6666+9

  =1+9

  =10

  (365-5)÷36

  =360÷36

  =10

  33+66+1

  =99+1

  =100

  (100+25)÷25

  =125÷25

  =5

  (520+250)÷77

  =770÷77

  =10

2020-01-02 13:00:43
陈福明

  可以,谢谢了

2020-01-02 13:02:21
陈福明

  可以,谢谢了

2020-01-02 13:06:47

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