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数学计算题初一,七年级数学计算题1000道

  • 数学
  • 2023-05-05
目录
  • 初中七年级计算题
  • 七年级数学计算题1000道
  • 数学初中七年级计算题
  • 数学计算题初一下册和答案过程
  • 7年级计算题大全800题

  • 初中七年级计算题

    初一数学计算型链题400道,附加答案。十万火急!~~~~~~~~

    (一)计算题:

    (1)23+(-73)

    (2)(-84)+(-49)

    (3)7+(-2.04)

    (4)4.23+(-7.57)

    (5)(-7/3)+(-7/6)

    (6)9/4+(-3/2)

    (7)3.75+(2.25)+5/4

    (8)-3.75+(+5/4)+(-1.5)

    (9)(-17/4)+(-10/3)+(+13/3)+(11/3)

    (10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

    (11)(+1.3)-(+17/7)

    (12)(-2)-(+2/3)

    (13)|(-7.2)-(-6.3)+(1.1)|

    (14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

    (15)(-2/199)*(-7/6-3/2+8/3)

    (16)4a)*(-3b)*(5c)*1/6

    1. 3/7 × 49/9 - 4/3

    2. 8/9 × 15/36 + 1/27

    3. 12× 5/6 – 2/9 ×3

    4. 8× 5/4 + 1/4

    5. 6÷ 3/8 – 3/8 ÷6

    6. 4/7 × 5/9 + 3/7 × 5/9

    7. 5/2 -( 3/2 + 4/5 )

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

    9. 9 × 5/6 + 5/6

    10. 3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11. 7 × 5/49 + 3/14

    12. 6 ×( 1/2 + 2/3 )

    13. 8 × 4/5 + 8 × 11/5

    14. 31 × 5/6 – 5/6

    15. 9/7 - ( 2/7 – 10/21 )

    16. 5/9 × 18 – 14 × 2/7

    17. 4/5 × 25/16 + 2/3 × 3/4

    18. 14 × 8/7 – 5/6 × 12/15

    19. 17/32 – 3/4 × 9/24

    20. 3 × 2/9 + 1/3

    初行租铅一数学计算题及答案过程

    你好

    请问你要问什麼数学题呢?

    有具体的问题吗,可以说下

    希望可以帮到你,满意请采纳吧

    一道初一数学计算题,急!

    1÷[(-2)²×0.5²-(-2.24)÷(-2)³]-1又7/18

    =1÷[4×0.25-2.24÷8]-25/18

    =1÷[1-0.28]-25/18

    =1÷0.72-25/18

    =1÷18/25-25/18

    =25/18-25/18

    =0

    两道初一数学计算题!急!

    第一题应该是+1/4吧

    =(x+1/2)^2-y^2=(x+y+1/2)(x-y+1/2)

    2. (x+y-2)^2

    求各种初一数学计算题150题!带答案!

    1.25×(8+10)

    =1.25×8+1.25×10

    =10+12.5=22.5

    9123-(123+8.8)档好

    =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

    [-18]+29+[-52]+60= 19

    [-3]+[-2]+[-1]+0+1+2= -3

    [-301]+125+301+[-75]= 50

    [-1]+[-1/2]+3/4+[-1/4]= -1

    [-7/2]+5/6+[-0.5]+4/5+19/6= 1.25

    [-26.54]+[-6.14]+18.54+6.14= -8

    1.125+[-17/5]+[-1/8]+[-0.6]= -3

    [-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)

    5+21*8/2-6-59

    68/21-8-11*8+61

    -2/9-7/9-56

    4.6-(-3/4+1.6-4-3/4)

    1/2+3+5/6-7/12

    [2/3-4-1/4*(-0.4)]/1/3+2

    22+(-4)+(-2)+4*3

    -2*8-8*1/2+8/1/8

    (2/3+1/2)/(-1/12)*(-12)

    (-28)/(-6+4)+(-1)

    2/(-2)+0/7-(-8)*(-2)

    (1/4-5/6+1/3+2/3)/1/2

    18-6/(-3)*(-2)

    (5+3/8*8/30/(-2)-3

    (-84)/2*(-3)/(-6)

    1/2*(-4/15)/2/3

    -3x+2y-5x-7y

    1437×27+27×563 〔75-(12+18)〕÷15

    2160÷〔(83-79)×18〕 280+840÷24×5

    325÷13×(266-250) 85×(95-1440÷24)

    58870÷(105+20×2) 1437×27+27×563

    81432÷(13×52+78) [37.85-(7.85+6.4)] ×30

    156×[(17.7-7.2)÷3] (947-599)+76×64

    36×(913-276÷23) [192-(54+38)]×67

    [(7.1-5.6)×0.9-1.15]÷2.5 81432÷(13×52+78)

    5.4÷[2.6×(3.7-2.9)+0.62] (947-599)+76×64 60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 194-64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2]

    (136+64)×(65-345÷23) (6.8-6.8×0.55)÷8.5

    0.12× 4.8÷0.12×4.8 (58+37)÷(64-9×5)

    812-700÷(9+31×11) (3.2×1.5+2.5)÷1.6

    85+14×(14+208÷26) 120-36×4÷18+35

    (284+16)×(512-8208÷18) 9.72×1.6-18.305÷7

    4/7÷[1/3×(3/5-3/10)] (4/5+1/4)÷7/3+7/10

    12.78-0÷( 13.4+156.6 ) 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 3.2×(1.5+2.5)÷1.6

    85+14×(14+208÷26) (58+37)÷(64-9×5)

    (6.8-6.8×0.55)÷8.5 (284+16)×(512-8208÷18)

    0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6

    120-36×4÷18+35 10.15-10.75×0.4-5.7

    5.8×(3.87-0.13)+4.2×3.74 347+45×2-4160÷52

    32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)

    [(7.1-5.6)×0.9-1.15] ÷2.5 (3.2×1.5+2.5)÷1.6

    5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6

    3.2×6+(1.5+2.5)÷1.6 (3.2×1.5+2.5)÷1.6

    5.8×(3.87-0.13)+4.2×3.74

    33.02-(148.4-90.85)÷2.5

    1)23+(-73)

    (2)(-84)+(-49)

    (3)7+(-2.04)

    (4)4.23+(-7.57)

    (5)(-7/3)+(-7/6)

    (6)9/4+(-3/2)

    (7)3.75+(2.25)+5/4

    (8)-3.75+(+5/4)+(-1.5)

    (9)(-17/4)+(-10/3)+(+13/3)+(11/3)

    (10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

    (11)(+1.3)-(+17/7)

    (12)(-2)-(+2/3)

    (13)|(-7.2)-(-6.3)+(1.1)|

    (14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

    (15)(-2/199)*(-7/6-3/2+8/3)

    (16)4a)*(-3b)*(5c)*1/6

    1. 3/7 × 49/9 - 4/3

    2. 8/9 × 15/36 + 1/27

    3. 12× 5/6 – 2/9 ×3

    4. 8× 5/4 + 1/4

    5. 6÷ 3/8 – 3/8 ÷6

    6. 4/7 × 5/9 + 3/7 × 5/9

    7. 5/2 -( 3/2 + 4/5 )

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

    9. 9 × 5/6 + 5/6

    10. 3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11. 7 × 5/49 + 3/14

    12. 6 ×( 1/2 + 2/3 )

    13. 8 × 4/5 + 8 × 11/5

    14. 31 × 5/6 – 5/6

    15. 9/7 - ( 2/7 – 10/21 )

    16. 5/9 × 18 – 14 × 2/7

    17. 4/5 × 25/16 + 2/3 × 3/4

    18. 14 × 8/7 – 5/6 × 12/15

    19. 17/32 – 3/4 × 9/24

    20. 3 × 2/9 + 1/3

    21. 5/7 × 3/25 + 3/7

    22. 3/14 ×× 2/3 + 1/6

    23. 1/5 × 2/3 + 5/6

    24. 9/22 + 1/11 ÷ 1/2

    25. 5/3 × 11/5 + 4/3

    26. 45 × 2/3 + 1/3 × 15

    27. 7/19 + 12/19 × 5/6

    28. 1/4 + 3/4 ÷ 2/3

    29. 8/7 × 21/16 + 1/2

    30. 101 × 1/5 – 1/5 × 21

    31.50+160÷40 (58+370)÷(64-45)

    32.120-144÷18+35

    33.347+45×2-4160÷52

    34(58+37)÷(64-9×5)

    35.95÷(64-45)

    36.178-145÷5×6+42 420+580-64×21÷28

    37.812-700÷(9+31×11) (136+64)×(65-345÷23)

    38.85+14×(14+208÷26)

    39.(284+16)×(512-8208÷18)

    40.120-36×4÷18+35

    41.(58+37)÷(64-9×5)

    42.(6.8-6.8×0.55)÷8.5

    43.0.12× 4.8÷0.12×4.8

    44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

    45.6-1.6÷4= 5.38+7.85-5.37=

    46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

    47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

    48.10.15-10.75×0.4-5.7

    49.5.8×(3.87-0.13)+4.2×3.74

    50.32.52-(6+9.728÷3.2)×2.5

    51.-5+58+13+90+78-(-56)+50

    52.-7*2-57/(3

    53.(-7)*2/(1/3)+79/(3+6/4)

    54.123+456+789+98/(-4)

    55.369/33-(-54-31/15.5)

    56.39+{3x[42/2x(3x8)]}

    57.9x8x7/5x(4+6)

    58.11x22/(4+12/2)

    59.94+(-60)/10

    1.

    a^3-2b^3+ab(2a-b)

    =a^3+2a^2b-2b^3-ab^2

    =a^2(a+2b)-b^2(2b+a)

    =(a+2b)(a^2-b^2)

    =(a+2b)(a+b)(a-b)

    2.

    (x^2+y^2)^2-4y(x^2+y^2)+4y^2

    =(x^2+y^2-2y)^2

    3.

    (x^2+2x)^2+3(x^2+2x)+x^2+2x+3

    =(x^2+2x)^2+4(x^2+2x)+3

    =(x^2+2x+3)(x^2+2x+1)

    =(x^2+2x+3)(x+1)^2

    4.

    (a+1)(a+2)+(2a+1)(a-2)-12

    =a^2+3a+2+2a^2-3a-2-12

    =3a^2-12

    =3(a+2)(a-2)

    5.

    x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2

    =[x(y+z)-y(x-z)]^2

    =(xz+yz)^2

    =z^2(x+y)^2

    6.

    3(a+2)^2+28(a+2)-20

    =[3(a+2)-2][(a+2)+10]

    =(3a+4)(a+12)

    7.

    (a+b)^2-(b-c)^2+a^2-c^2

    =(a+b)^2-c^2+a^2-(b-c)^2

    =(a+b+c)(a+b-c)+(a+b-c)(a-b+c)

    =(a+b-c)(a+b+c+a-b+c)

    =2(a+b-c)(a+c)

    8.

    x(x+1)(x^2+x-1)-2

    =(x^2+x)(x^2+x-1)-2

    =(x^2+x)^2-(x^2+x)-2

    =(x^2+x-2)(x^2+x+1)

    =(x+2)(x-1)(x^2+x+1)

    1. 3/7 × 49/9 - 4/3

    2. 8/9 × 15/36 + 1/27

    3. 12× 5/6 – 2/9 ×3

    4. 8× 5/4 + 1/4

    5. 6÷ 3/8 – 3/8 ÷6

    6. 4/7 × 5/9 + 3/7 × 5/9

    7. 5/2 -( 3/2 + 4/5 )

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

    9. 9 × 5/6 + 5/6

    10. 3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11. 7 × 5/49 + 3/14

    12. 6 ×( 1/2 + 2/3 )

    13. 8 × 4/5 + 8 × 11/5

    14. 31 × 5/6 – 5/6

    15. 9/7 - ( 2/7 – 10/21 )

    16. 5/9 × 18 – 14 × 2/7

    17. 4/5 × 25/16 + 2/3 × 3/4

    18. 14 × 8/7 – 5/6 × 12/15

    19. 17/32 – 3/4 × 9/24

    20. 3 × 2/9 + 1/3

    21. 5/7 × 3/25 + 3/7

    22. 3/14 ×× 2/3 + 1/6

    23. 1/5 × 2/3 + 5/6

    24. 9/22 + 1/11 ÷ 1/2

    25. 5/3 × 11/5 + 4/3

    26. 45 × 2/3 + 1/3 × 15

    27. 7/19 + 12/19 × 5/6

    28. 1/4 + 3/4 ÷ 2/3

    29. 8/7 × 21/16 + 1/2

    30. 101 × 1/5 – 1/5 × 21

    31.50+160÷40 (58+370)÷(64-45)

    32.120-144÷18+35

    33.347+45×2-4160÷52

    34(58+37)÷(64-9×5)

    35.95÷(64-45)

    36.178-145÷5×6+42 420+580-64×21÷28

    37.812-700÷(9+31×11) (136+64)×(65-345÷23)

    38.85+14×(14+208÷26)

    39.(284+16)×(512-8208÷18)

    40.120-36×4÷18+35

    41.(58+37)÷(64-9×5)

    42.(6.8-6.8×0.55)÷8.5

    43.0.12× 4.8÷0.12×4.8

    44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

    45.6-1.6÷4= 5.38+7.85-5.37=

    46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

    47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

    48.10.15-10.75×0.4-5.7

    49.5.8×(3.87-0.13)+4.2×3.74

    50.32.52-(6+9.728÷3.2)×2.5

    51.-5+58+13+90+78-(-56)+50

    52.-7*2-57/(3

    53.(-7)*2/(1/3)+79/(3+6/4)

    54.123+456+789+98/(-4)

    55.369/33-(-54-31/15.5)

    56.39+{3x[42/2x(3x8)]}

    57.9x8x7/5x(4+6)

    58.11x22/(4+12/2)

    59.94+(-60)/10

    1.

    a^3-2b^3+ab(2a-b)

    =a^3+2a^2b-2b^3-ab^2

    =a^2(a+2b)-b^2(2b+a)

    =(a+2b)(a^2-b^2)

    =(a+2b)(a+b)(a-b)

    2.

    (x^2+y^2)^2-4y(x^2+y^2)+4y^2

    =(x^2+y^2-2y)^2

    3.

    (x^2+2x)^2+3(x^2+2x)+x^2+2x+3

    =(x^2+2x)^2+4(x^2+2x)+3

    =(x^2+2x+3)(x^2+2x+1)

    =(x^2+2x+3)(x+1)^2

    4.

    (a+1)(a+2)+(2a+1)(a-2)-12

    =a^2+3a+2+2a^2-3a-2-12

    =3a^2-12

    =3(a+2)(a-2)

    5.

    x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2

    =[x(y+z)-y(x-z)]^2

    =(xz+yz)^2

    =z^2(x+y)^2

    6.

    3(a+2)^2+28(a+2)-20

    =[3(a+2)-2][(a+2)+10]

    =(3a+4)(a+12)

    7.

    (a+b)^2-(b-c)^2+a^2-c^2

    =(a+b)^2-c^2+a^2-(b-c)^2

    =(a+b+c)(a+b-c)+(a+b-c)(a-b+c)

    =(a+b-c)(a+b+c+a-b+c)

    =2(a+b-c)(a+c)

    8.

    x(x+1)(x^2+x-1)-2

    =(x^2+x)(x^2+x-1)-2

    =(x^2+x)^2-(x^2+x)-2

    =(x^2+x-2)(x^2+x+1)

    =(x+2)(x-1)(x^2+x+1)

    初一数学计算题200道

    1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3]

    1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3]

    1-1/3[4x/3-1/3]=x/2-1/2[13x/3-10/3]

    1-4x/9-1/9=x/2-13x/6+10/6

    4x/9-x/2+13/6=10/6-4-1/9

    8x/18-9x/18+39x/18=30/18-18/18-2/18

    38x/18=18/10

    x=10/18÷38/18

    x=10/18×18/38

    x=5/19

    (5x2-2x+3)+(3x2+5x+2)

    x2y +2xy2

    –y3 +3xy2

    –4x2y-x3

    3ab-4ab+8ab-7ab+ab=______.

    7x-(5x-5y)-y=______.

    23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.

    -7x2+6x+13x2-4x-5x2=______.

    2y+(-2y+5)-(3y+2)=______.

    1. 3/7 × 49/9 - 4/3

    2. 8/9 × 15/36 + 1/27

    3. 12× 5/6 – 2/9 ×3

    4. 8× 5/4 + 1/4

    5. 6÷ 3/8 – 3/8 ÷6

    6. 4/7 × 5/9 + 3/7 × 5/9

    7. 5/2 -( 3/2 + 4/5 )

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

    9. 9 × 5/6 + 5/6

    10. 3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11. 7 × 5/49 + 3/14

    12. 6 ×( 1/2 + 2/3 )

    13. 8 × 4/5 + 8 × 11/5

    14. 31 × 5/6 – 5/6

    15. 9/7 - ( 2/7 – 10/21 )

    16. 5/9 × 18 – 14 × 2/7

    17. 4/5 × 25/16 + 2/3 × 3/4

    18. 14 × 8/7 – 5/6 × 12/15

    19. 17/32 – 3/4 × 9/24

    20. 3 × 2/9 + 1/3

    21. 5/7 × 3/25 + 3/7

    22. 3/14 ×× 2/3 + 1/6

    23. 1/5 × 2/3 + 5/6

    24. 9/22 + 1/11 ÷ 1/2

    25. 5/3 × 11/5 + 4/3

    26. 45 × 2/3 + 1/3 × 15

    27. 7/19 + 12/19 × 5/6

    28. 1/4 + 3/4 ÷ 2/3

    29. 8/7 × 21/16 + 1/2

    30. 101 × 1/5 – 1/5 × 21

    31.50+160÷40 (58+370)÷(64-45)

    32.120-144÷18+35

    33.347+45×2-4160÷52

    34(58+37)÷(64-9×5)

    35.95÷(64-45)

    36.178-145÷5×6+42 420+580-64×21÷28

    37.812-700÷(9+31×11) (136+64)×(65-345÷23)

    38.85+14×(14+208÷26)

    39.(284+16)×(512-8208÷18)

    40.120-36×4÷18+35

    41.(58+37)÷(64-9×5)

    42.(6.8-6.8×0.55)÷8.5

    43.0.12× 4.8÷0.12×4.8

    44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

    45.6-1.6÷4= 5.38+7.85-5.37=

    46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

    47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

    48.10.15-10.75×0.4-5.7

    49.5.8×(3.87-0.13)+4.2×3.74

    50.32.52-(6+9.728÷3.2)×2.5

    51.-5+58+13+90+78-(-56)+50

    52.-7*2-57/(3

    53.(-7)*2/(1/3)+79/(3+6/4)

    54.123+456+789+98/(-4)

    55.369/33-(-54-31/15.5)

    56.39+{3x[42/2x(3x8)]}

    57.9x8x7/5x(4+6)

    58.11x22/(4+12/2)

    59.94+(-60)/10

    (1)23+(-73)

    (2)(-84)+(-49)

    (3)7+(-2.04)

    (4)4.23+(-7.57)

    (5)(-7/3)+(-7/6)

    (6)9/4+(-3/2)

    (7)3.75+(2.25)+5/4

    (8)-3.75+(+5/4)+(-1.5)

    (9)(-17/4)+(-10/3)+(+13/3)+(11/3)

    (10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

    (11)(+1.3)- (+17/7)

    (12)(-2)- (+2/3)

    (13)| (-7.2)-(-6.3)+(1.1)|

    (14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

    (15)(-2/199)*(-7/6-3/2+8/3)

    (16)4a)*(-3b)*(5c)*1/6

    1)23+(-73)

    (2)(-84)+(-49)

    (3)7+(-2.04)

    (4)4.23+(-7.57)

    (5)(-7/3)+(-7/6)

    (6)9/4+(-3/2)

    (7)3.75+(2.25)+5/4

    (8)-3.75+(+5/4)+(-1.5)

    (9)(-17/4)+(-10/3)+(+13/3)+(11/3)

    (10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)

    (11)(+1.3)-(+17/7)

    (12)(-2)-(+2/3)

    (13)|(-7.2)-(-6.3)+(1.1)|

    (14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)

    (15)(-2/199)*(-7/6-3/2+8/3)

    (16)4a)*(-3b)*(5c)*1/6

    还有50道题,不过没有答案

    1. 3/7 × 49/9 - 4/3

    2. 8/9 × 15/36 + 1/27

    3. 12× 5/6 – 2/9 ×3

    4. 8× 5/4 + 1/4

    5. 6÷ 3/8 – 3/8 ÷6

    6. 4/7 × 5/9 + 3/7 × 5/9

    7. 5/2 -( 3/2 + 4/5 )

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

    9. 9 × 5/6 + 5/6

    10. 3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11. 7 × 5/49 + 3/14

    12. 6 ×( 1/2 + 2/3 )

    13. 8 × 4/5 + 8 × 11/5

    14. 31 × 5/6 – 5/6

    15. 9/7 - ( 2/7 – 10/21 )

    16. 5/9 × 18 – 14 × 2/7

    17. 4/5 × 25/16 + 2/3 × 3/4

    18. 14 × 8/7 – 5/6 × 12/15

    19. 17/32 – 3/4 × 9/24

    20. 3 × 2/9 + 1/3

    21. 5/7 × 3/25 + 3/7

    22. 3/14 ×× 2/3 + 1/6

    23. 1/5 × 2/3 + 5/6

    24. 9/22 + 1/11 ÷ 1/2

    25. 5/3 × 11/5 + 4/3

    26. 45 × 2/3 + 1/3 × 15

    27. 7/19 + 12/19 × 5/6

    28. 1/4 + 3/4 ÷ 2/3

    29. 8/7 × 21/16 + 1/2

    30. 101 × 1/5 – 1/5 × 21

    31.50+160÷40 (58+370)÷(64-45)

    32.120-144÷18+35

    33.347+45×2-4160÷52

    34(58+37)÷(64-9×5)

    35.95÷(64-45)

    36.178-145÷5×6+42 420+580-64×21÷28

    37.812-700÷(9+31×11) (136+64)×(65-345÷23)

    38.85+14×(14+208÷26)

    39.(284+16)×(512-8208÷18)

    40.120-36×4÷18+35

    41.(58+37)÷(64-9×5)

    42.(6.8-6.8×0.55)÷8.5

    43.0.12× 4.8÷0.12×4.8

    44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

    45.6-1.6÷4= 5.38+7.85-5.37=

    46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

    47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

    48.10.15-10.75×0.4-5.7

    49.5.8×(3.87-0.13)+4.2×3.74

    50.32.52-(6+9.728÷3.2)×2.5

    51.-5+58+13+90+78-(-56)+50

    52.-7*2-57/(3

    53.(-7)*2/(1/3)+79/(3+6/4)

    54.123+456+789+98/(-4)

    55.369/33-(-54-31/15.5)

    56.39+{3x[42/2x(3x8)]}

    57.9x8x7/5x(4+6)

    58.11x22/(4+12/2)

    59.94+(-60)/10

    1.

    a^3-2b^3+ab(2a-b)

    =a^3+2a^2b-2b^3-ab^2

    =a^2(a+2b)-b^2(2b+a)

    =(a+2b)(a^2-b^2)

    =(a+2b)(a+b)(a-b)

    2.

    (x^2+y^2)^2-4y(x^2+y^2)+4y^2

    =(x^2+y^2-2y)^2

    3.

    (x^2+2x)^2+3(x^2+2x)+x^2+2x+3

    =(x^2+2x)^2+4(x^2+2x)+3

    =(x^2+2x+3)(x^2+2x+1)

    =(x^2+2x+3)(x+1)^2

    4.

    (a+1)(a+2)+(2a+1)(a-2)-12

    =a^2+3a+2+2a^2-3a-2-12

    =3a^2-12

    =3(a+2)(a-2)

    5.

    x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2

    =[x(y+z)-y(x-z)]^2

    =(xz+yz)^2

    =z^2(x+y)^2

    6.

    3(a+2)^2+28(a+2)-20

    =[3(a+2)-2][(a+2)+10]

    =(3a+4)(a+12)

    7.

    (a+b)^2-(b-c)^2+a^2-c^2

    =(a+b)^2-c^2+a^2-(b-c)^2

    =(a+b+c)(a+b-c)+(a+b-c)(a-b+c)

    =(a+b-c)(a+b+c+a-b+c)

    =2(a+b-c)(a+c)

    8.

    x(x+1)(x^2+x-1)-2

    =(x^2+x)(x^2+x-1)-2

    =(x^2+x)^2-(x^2+x)-2

    =(x^2+x-2)(x^2+x+1)

    =(x+2)(x-1)(x^2+x+1)

    9x^2(x-1)^2-3(x^2-x)-56

    =9x^2(x-1)^2-3x(x-1)-56

    =[3x(x-1)-8][3x(x-1)+7]

    =(3x^2-3x-8)(3x^2-3x+7)

    150道初一数学计算题

    你举的例子很强悍,别和我说你是老师!

    初一数学计算题600道要答案及过程

    自己买本参考书和习题书。参考书要有知识点归纳,例题解释,题目要有梯度,答案要详细的那种。可以好好选选。顺便买一本配套的习题书,要和学的内容配套,然後题目的要求同参考书。上完课之後可以先好好复习下,把重点知识掌握後看例题,然後做习题,做完後要好好分析答案。之後有时间在做习题书上的题目。

    初一数学计算题!

    (x-1)^3=5

    x-1=3√5

    x=3√5+1

    26°18′52〃×6 =156°108′312〃 =157°53′12〃

    七年级数学计算题1000道

    计算题是七年级数学学习的重要内容,其不仅仅关系到基础数学计算能力的培养,还牵涉到实践能力和创新能力的全面培养。下面是我为大家洞绝精心整理的七蔽搜年级数学的计算题大全,仅供参考。

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    ★七年级数学的公式

    数学初中七年级计算题

    解七年级数学的计算题,特别是多步骤计算题,有时要用到多个公式,头绪纷繁,步骤复杂。若用方程法解这类题目,有的可以减少计算步骤,有的能够化繁为简。下面我给大家分享一些七年级数学的计算题100道,大家快来跟我一起看看吧。

    ↓↓↓橡竖此点击获取更多“数学题及纤带相关知识”↓↓↓

    ★★ ★七年级数学知识点★★★

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    ★初一数学整式练习题及答案

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    数学计算题初一下册和答案过程

    :【1】(2a+b)^2-(2a+b)(2a+b);

    =(2a+b)^2-(2a+b)^2=0

    【2】(3a^2)^3-6a^3(2a^3+3a^2+a);

    =27a^6-18a(2a^3+3a^2+a)

    =27a^6-36a^4-54a^3-18a^2

    【3】(2a+3b)^2(3b-2a)^2;

    =[(3b+2a)(3b-2a)]^2

    =(9b^2-4a^2)^2

    81b^4+16a^4-72a^2b^2

    【4】(x-2y+3)(x+2y-3);

    =[x-(2y-3)][x+(2y-3)]

    =x^2-(2y-3)^2

    =x^2-4y^2+12y-9

    用整式乘法公式计算:【5】1001^2;

    =(1000+1)^2

    =1000000+1+2000=1002001

    【6】1.99^2-2.99*0.99;

    =1.99^2-(1.99+1)(1.99-1)

    =1.99^2-(1.99^2-1^2)

    =1

    分解因式:【7】(m-n)^2009-16(m-n)^2009;

    =(1-16)(m-n)^2009

    =15(m-n)^2009

    【8】(1/局配2)x^2-8ax+32a^2;

    =1/2(x^2-16ax+64a^2)

    =1/2(x-8a)^2

    【9】5a^b(x-y)^2-30ab^2(y-x)^2;

    5a^b这个是不是有问题啊?

    按你原题解

    =(x-y)^2[5a^b+30ab^2]

    =5(x-y)^2[a^b+6ab^2]

    【10】a^2-(b^2+c^2-2bc);

    =a^2-(b-c)^2

    =(a+b-c)(a-b+c)

    【11】x^2(x^2-y^2)+z^2(y^2-x^2);

    =(x^2-y^2)(x^2-z^2)

    =(x+y)(x-y)(x+z)(x-z)

    【12】(x-4)(x-6)+1;

    =x^2-10x+24+1

    =x^2-10x+25

    =(x-5)^2

    【13】(a+b)^2+4(a+b+1)

    =a^2+b^2+2ab+4a+4b+4 +4-4

    =(a+2)^2+(b+2)^2+2ab-4

    =[(a+2)+(b+2)]^2-2(a+2)(b+2)+2ab-4

    =[a+b+4]^2-4(a+b+3)

    =[a+b+4]^2-4(a+b+4)+4

    =[(a+b+4)+2]^2

    =(a+b+6)^2

    【14】ax-bx

    =x(a-b)

    【15】a^3-a

    =a(a^2-1)

    =a(a+1)(a-1)

    【16】y^3+2y^2+y

    =y(y^2+2y+1)

    =y(y+1)^2

    填空:【17】航桐毁指天飞机绕地余纳球飞行的速度成为第一宇宙速度,第一宇宙速度为7.9*10^3m/s,航天飞机绕地球运行1天(24h)的行程为_7.9*10^3*24*60*60=6.8256*10^8m______

    【18】2ab^2*(-3ab^2)^2=___18a^3b^6____

    【19】2x(1-3x)-(2x-1)(4-3x)=__-9x+4_____

    【20】(2x+y)^2=(2x-y)^2+__8xy_____

    这么多题,楼主要多给点分啊~

    7年级计算题大全800题

    【1】(2a+b)^2-(2a+b)(2a+b);

    =(2a+b)^2-(2a+b)^2=0

    【2】(3a^2)^3-6a^3(2a^3+3a^2+a);

    =27a^6-18a(2a^3+3a^2+a)

    =27a^6-36a^4-54a^3-18a^2

    【3】(2a+3b)^2(3b-2a)^2;

    =[(3b+2a)(3b-2a)]^2

    =(9b^2-4a^2)^2

    81b^4+16a^4-72a^2b^2

    【4】(x-2y+3)(x+2y-3);

    =[x-(2y-3)][x+(2y-3)]

    =x^2-(2y-3)^2

    =x^2-4y^2+12y-9

    用整式乘法公式计算:【5】1001^2;

    =(1000+1)^2

    =1000000+1+2000=1002001

    【6】1.99^2-2.99*0.99;

    =1.99^2-(1.99+1)(1.99-1)

    =1.99^2-(1.99^2-1^2)

    =1

    分解因式:【7】(m-n)^2009-16(m-n)^2009;

    =(1-16)(m-n)^2009

    =15(m-n)^2009

    【8】(1/旅尘2)x^2-8ax+32a^2;

    =1/2(x^2-16ax+64a^2)

    =1/2(x-8a)^2

    【9】5a^b(x-y)^2-30ab^2(y-x)^2;

    5a^b这个是不是有问题啊?

    按你原题解

    =(x-y)^2[5a^b+30ab^2]

    =5(x-y)^2[a^b+6ab^2]

    【10】a^2-(b^2+c^2-2bc);

    =a^2-(b-c)^2

    =(a+b-c)(a-b+c)

    【11】x^2(x^2-y^2)+z^2(y^2-x^2);

    =(x^2-y^2)(x^2-z^2)

    =(x+y)(x-y)(x+z)(x-z)

    【12】(x-4)(x-6)+1;

    =x^2-10x+24+1

    =x^2-10x+25

    =(x-5)^2

    【13】(a+b)^2+4(a+b+1)

    =a^2+b^2+2ab+4a+4b+4 +4-4

    =(a+2)^2+(b+2)^2+2ab-4

    =[(a+2)+(b+2)]^2-2(a+2)(b+2)+2ab-4

    =[a+b+4]^2-4(a+b+3)

    =[a+b+4]^2-4(a+b+4)+4

    =[(a+b+4)+2]^2

    =(a+b+6)^2

    【14】ax-bx

    =x(a-b)

    【15】a^3-a

    =a(a^2-1)

    =a(a+1)(a-1)

    【16】y^3+2y^2+y

    =y(y^2+2y+1)

    =y(y+1)^2

    填空:【17】航天飞机绕地球飞行的速度成为第一宇宙速度,第一宇宙拆含禅速度为7.9*10^3m/s,航天飞老颤机绕地球运行1天(24h)的行程为_7.9*10^3*24*60*60=6.8256*10^8m______

    【18】2ab^2*(-3ab^2)^2=___18a^3b^6____

    【19】2x(1-3x)-(2x-1)(4-3x)=__-9x+4_____

    【20】(2x+y)^2=(2x-y)^2+__8xy_____

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