解方程 第一題9 6 4x 25 6 9x第二題0 6 0 2x 2 4 0 4x第三題4 1 4 2x 3)0 5十萬火急

2022-05-16 14:14:35 字數 8257 閱讀 5270

1樓:匿名使用者

解方程第一題:移項:9x-4x=25.6-9.6.

5x=16

x=16/5

第二題:0.4x-0.2x=2.4-0.6.

0.2x=1.8.

x=9.

第三題:4-1.4(2x-3=-0.5

2.8x=4-4.2-0.5

2.8x=-0.7.

x=7/28.

x=1/4.

簡便計算:

2/0.25-0.25/2=200/25-25/200=200/25[1-(25/200)/(25/200)]

=200/25*(1-1).

=(200/25)*0.

=0.(3.2*0.

6/3.2*0.6)/1.

2=0.6*0.6/1.

2. 【理解原題為:[3.

2*(0.6/3.2)*0.

6]/1.2】

=0.36/1.2.

=36/120.

=3/10.

或:(3.2*0.

6/3.2*0.6)/1.

2=1/1.2 【理解原題為:[(3.

2*0.6)/(3.2*0.

6)]/1.2】

=10/12.

=5/6.

2樓:匿名使用者

第一題9.6-4x=25.6-9x

5x=16

x=3.2

第二題0.6-0.2x=2.4-0.4x

0.2x=1.8

x=9第三題4-1.4(2x-3)=0.52.8x-4.2=3.5

2.8x=7.7

x=2.75

2/0.25-0.25/2

=8-0.125

=7.875

(3.2*0.6/3.2*0.6)/1.2=(0.6*0.6)/1.2

=0.3

解方程: 題1: 0.2(3-x)=0.4(6-x) 題2: 9.6-4x=25.6-9

3樓:尉遲飛路飛

0.6-0.2x=2.4-0.4x

0.2x=1.8

x=99.6-4x=25.6-9x

5x=16

x=3.2

4樓:匿名使用者

題1:0.2(3-x)=0.4(6-x)

0.6-0.2x=0.24-0.4x

-0.2x+0.4x=0.24-0.6

0.2x=-0.36

x=-1.8

題2: 9.6-4x=25.6-9

9.6-4x=16.6

-4x=16.6-9.6

-4x=7

x=-7/4

5樓:專家

解:0.6-0.2x=2.4-0.4x

0.4x-0.2x=2.4-0.6

0.2x=1.8

x=9解:9x-4x=25.6-9.6

5x=16

x=3.2

9點6一4x=25點6一qx解方程

6樓:匿名使用者

9.6-4x=25.6-9x

9x-4x=25.6-9.6

5x=16

x=16/5

x=3.2

7樓:匿名使用者

5×9-4x=25 解:45-4x=25 4x=45-25 4x=20 x=20÷4 x=5

五年級下冊脫式計算 解方程 解決問題20道 30

8樓:遊南珍

99.99-30+99

9樓:新野旁觀者

(13)2x-8=10

(14)1÷2x-8=4

(15)x-5/6=7

(16)3x+7=28

(17)3x-7=26

(18)9x-x=16

(19)24x+x=50

(20)6÷7x-8=4

(30)3x-8=30

(31)6x+6=12

(32)3x-3=1

(33)5x-3x=4

(34)2x+16=19

(35)5x+8=19

(36)14-6x=8

(37)15+6x=27

(38)5-8x=4

(39)7x+8=15

(40)9-2x=1

(41)4+5x=9

(42)10-x=8

(43)8x+9=17

(44)9+6x=14

(45)x+9x=4+7

(46)2x+9=17

(47)8-4x=6

(48)6x-7=12

(49)7x-9=8

(50)x-56=1

(51)8-7x=1

(52)x-30=12

(53)6x-21=21

(54)6x-3=6

(55)9x=18

(56)4x-18=13

(57)5x+9=11

(58)6-2x=11

(59)x+4+8=23

(60)7x-12=8

(61)x-5.7=2.15

(62)15 5x-2x=18

(62)3x 0.7=5

(63)3.5×2= 4.2 x

(64)26×1.5= 2x

(65)0.5×16―16×0.2=4x

(66)9.25-x=0.403

(67)16.9÷x=0. 3

(68)x÷0.5=2.6

(69)x+13=33

(70)3 - 5x=80

(71)1.8- 6x=54

(72)6.7x -60.3=6.7

(73)9 +4x =40

(74)0.2x-0.4+0.5=3.7

(75)9.4x-0.4x=16.2

(76)12 -4x=20

(77)1/3 x+5/6 x=1.4

(78)12 x+34 x=1

(79)18x-14 x= 12

(80)23 x-5×14 = 14

(81)12 +34 x=56

(82)22-14 x= 12

(83)23 x-14 x= 14

(84)x+14 x= 65

(85)23 x=14 x +14

(86)30 x-12 x -14 x=15x-2x=30

89x-43x=9.2

5x-45=100

1.2x-0.5x=6.3

23.4=2x=56

4x-x=48.6

21×(9.3-3.7)-5.6

2.3×16+2.3×23+2.3

46×57+23×86

101×0.87-0.91×87

4.8+8.63+5.2+0.37

2.35+1.713+0.287+7.650.134+2.66+0.866

3.07-0.38-1.62

3.25+1.79-0.59+1.75

3.2+0.36+4.8+1.64

12.7-(3.7+0.84)

7.6×0.8+0.2×7.6

1.28×8.6+0.72×8.6

0.8×(4.3×1.25)

0.86×15.7-0.86×14.7

14-7.32-2.68

(2.5-0.25)×0.4

63.4÷2.5÷0.4

(7.7+1.54)÷0.7

0.35×1.25×2×0.8

4.5÷1.8

3.65×10.1

30.8÷[14-(9.85+1.07)]20×[(2.44-1.8)÷0.4+0.15]777×9+1111×3

31.5×4÷(6+3)

194-64.8÷1.8×0.9

24÷2.4-2.5×0.8

469×12+1492

0.8×[(10-6.76)÷1.2]

18.1×0.92+3.93

0.75×102

30.8÷[14-(9.85+1.07)]20×[(2.44-1.8)÷0.4+0.15]777×9+1111×3

31.5×4÷(6+3)

194-64.8÷1.8×0.9

24÷2.4-2.5×0.8

469×12+1492

0.8×[(10-6.76)÷1.2]

0.4×0.7×0.25

4.07×0.86+9.12.5

0.78+5.436+1

3/7 × 49/9 - 4/3

8/9 × 15/36 + 1/27

12× 5/6 – 2/9 ×3

8× 5/4 + 1/4

6÷ 3/8 – 3/8 ÷6

4/7 × 5/9 + 3/7 × 5/95/2 -( 3/2 + 4/5 )

7/8 + ( 1/8 + 1/9 )

9 × 5/6 + 5/6

3/4 × 8/9 - 1/3

7 × 5/49 + 3/14

6 ×( 1/2 + 2/3 )

8 × 4/5 + 8 × 11/5

31 × 5/6 – 5/6

9/7 - ( 2/7 – 10/21 )5/9 × 18 – 14 × 2/7

4/5 × 25/16 + 2/3 × 3/40.68×1.9+0.32×1.9

5.38+7.85-5.370.456+6.22+3.785.17-1.8-3.2

7.85+2.34-0.85+4.66

9.6+4.8-3.6

13.35-4.68+2.65

0.398+0.36+3.64

0.25×16.2×4

3.72×3.5+6.28×3.5

4.8×7.8+78×0.52

56.5×9.9+56.5

4.2÷3.5

3.52÷2.5÷0.4

9.6÷0.8÷0.4

0.49÷1.4

0.89×100.1

4.36×12.5×8

8.54÷2.5÷0.4

3.14×0.68+31.4×0.032

8.9×1.01

18-1.8÷0.125÷0.8

15.02-6.8-1.02

9.43-(6.28-1.57)

13.7×0.25-3.7÷4

10.7×16.1-15.1×10.7

5.93+0.19+2.81

1.57+0.245+7.43

1.27+3.9+0.73+16.1

1.29+3.7+2.71+6.3

23.4-0.8-13.4-7.2

1.23+3.4-0.23+6.6

36.54-1.76-4.54

0.85×199

12.5×0.96×0.8

3.12+3.12×99

2.4×102

2.64+8.67+7.36+11.33

9.16×1.5-0.5×9.16

4.9÷1.4

2.5×2.4

32.4×0.9+0.1×32.4

4.2÷3.5

15÷(0.15×0.4)

[60-(9.5+28.9)]÷0.18

28-(3.4+1.25×2.4)

0.8×〔15.5-(3.21+5.79)〕0.64×25×7.8+2.2

36.72÷4.25×9.9

(4121+2389)÷7

405×(3213-3189)

19.4×6.1×2.3

0.0430.24+0.875

100-56.23

[60-(9.5+28.9)]÷0.18

28-(3.4+1.25×2.4)

0.8×〔15.5-(3.21+5.79)〕0.64×25×7.8+2.2

36.72÷4.25×9.9

(4121+2389)÷7

405×(3213-3189)

19.4×6.1×2.3

0.75×102

18.1×0.92+3.93

4.07×0.86+9.12

14 × 8/7 – 5/6 × 12/1517/32 – 3/4 × 9/24

3 × 2/9 + 1/3

5/7 × 3/25 + 3/7

3/14 ×2/3 + 1/6

1/5 × 2/3 + 5/6

9/22 + 1/11 ÷ 1/2

5/3 × 11/5 + 4/3

45 × 2/3 + 1/3 × 15

7/19 + 12/19 × 5/6

1/4 + 3/4 ÷ 2/3

8/7 × 21/16 + 1/2

101 × 1/5 – 1/5 × 21

50+160÷40

120-144÷18+35

347+45×2-4160÷52

(58+37)÷(64-9×5)

6-1.19×3-0.4315.89+(6.75-5.89)13.75-(3.75+6.48)

35.6-1.8-15.6-7.2

7.14-0.53-2.47

73.8-1.64-13.8-5.36

15.75+3.59-0.59+14.25(1.25-0.125)×8

36.8-3.9-6.1

32+4.9-0.9

7.09×10.8-0.8×7.09

320÷1.25÷8

3.9-4.1+6.1-5.9

4.2×99+4.2

1.25×2.5×32

146.5-(23+46.5)

9.7×99+9.7

0.65×101

5.6÷1.25÷0.8÷2.5÷0.4

7.74×(2.8-1.3)+1.5×2.2612.7×9.9+1.27

5.4×11-5.4

3.65×4.7-36.5×0.37

2.22×9.9+6.66×6.7

0.79×199

1.76+0.195+3.24

6.02+3.6+1.98

7.5+4.9-6.5

8-2.45-1.55

0.32×403

0.25×36

0.25×0.73×4

0.25×8.5×4

10.4-9.6×0.35

28.6×101-28.6

2.31×1.2×0.5

70÷28

3.6-3.6×0.5

3.9÷(1.3×5)

2.7÷45

15÷0.25

930÷0.6÷5

3.2×0.25×12.5

2.881÷0.43-0.24×3.5

2.55×7.1+2.45×7.1

(31.8+3.2×4)÷5

2÷2.5+2.5÷2

5180-705×6

671×15-974

3.416÷(0.016×35)

5.67×0.2-0.62

0.4×0.7×0.25

0.78+5.436+1

2.881÷0.43-0.24×3.5

2.55×7.1+2.45×7.1

(31.8+3.2×4)÷5

2÷2.5+2.5÷2

5180-705×6

671×15-974

3.416÷(0.016×35)

5.67×0.2-0.62

100-56.23

0.0430.24+0.875

95÷(64-45)

178-145÷5×6+42

812-700÷(9+31×11)

85+14×(14+208÷26)

(284+16)×(512-8208÷18)120-36×4÷18+35

(58+37)÷(64-9×5)

(6.8-6.8×0.55)÷8.5

0.12× 4.8÷0.12×4.8

(3.2×1.5+2.5)÷1.6

6-1.6÷4

7.2÷0.8-1.2×5

6.5×(4.8-1.2×4)

10.15-10.75×0.4-5.7

5.8×(3.87-0.13)+4.2×3.7432.52-(6+9.728÷3.2)×2.5(136+64)×(65-345÷23)

420+580-64×21÷28

(58+370)÷(64-45)

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