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数学七年级计算题,初一数学计算题20道

  • 数学
  • 2024-02-01

数学七年级计算题?-1]³+[-125-3]÷4 =|-8/15-9|+24-45+16-32 =8/15+9+24-45+16-32 =-36-7/15 结果是-36又7/15。由于分数的横线形式写不了,只能写成这样了。这道题主要考查了绝对值、乘方的知识点。那么,数学七年级计算题?一起来了解一下吧。

有理数的混合运算20道

初一100道数学计算题及答案

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

[-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)

初一上册100道数学计算题及答案。

7年级上册计算题大全80

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。

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计算题初一数学180道带答案

125道简便脱式计算题七年级

34×3.535-3.5×34.34

=34×3.5×1.01-3.5×34×1.01

=0

8+89+899+8999+89999

=9+90+900+9000+90000-5

=99999-5

=99994

0.67×2.1+0.018×21+8.5×0.79

=0.67×2.1+0.18×2.1+8.5×0.79

=(0.67+0.18)×2.1+8.5×0.79

=0.85×2.1+0.85×7.9

=0.85×(2.1+7.9)

=0.85×10

=8.5

22222.2×9.99999

=22222.2×(10-0.00001)

=222222-0.222222

=222221.777778

1997×19961996-1996×19971997

=1997×1996×10001-1996×1997×10001

=0

0.02+0.04+0.06+0.08+……+19.94+19.96+19.98

=(0.02+19.98)×999÷2

=10×999

=9990

99999×77778+33333×66666

=99999×77778+99999×22222

=99999×(77778+22222)

=99999×100000

=9999900000

(4又5/6-3又3/4)/(3/14+2/7)

=13/12÷1/2

=13/6

=2又1/6

(4.8/1又4/5+3又1/2+7又1/3)*4/9

=(2又2/3+7又1/3+3.5)*4/9

=(10+3.5)*4/9

=13.5*4/9

=6

17.2/【(3又2/5-1.25)*2/3】

=17.2/【2.15*2/3】

=17.2÷43/3

=1.2

5*5又1/5

=5*5+5*1/5

=25+1

=26

(5又2/5-1.8)/[(1.15+13/20)*1又2/3]

=3.6/[1.8*5/3]

=3.6/3

=1.2

3又5/8*5又1/5+5又1/5*6又3/8

=5.2*(3又5/8+6又3/8)

=5.2*10

=52

[3/4-7/8/(5/6+4/5)]*28

=[3/4-7/8÷49/30]*28

=[3/4-15/28]*28

=3/4*28-15/28*28

=21-15

=6

(1.25*4/5-0.76)/(1又3/8+1又1/40)

=(1-0.76)/2.4

=0.24/2.4

=0.1

[(0.2+1/3)*4.5]/(8又1/20-6.45)

=8/15*4.5/1.6

=2.4/1.6

=1.5

x+3又2/3=5

x*9又3/4=7又1/11 x/2/5=10

6又2/3-x=4.25 6.4*1.7+6又2/5*8.3

(4又6/7+1.75)/1又11/14+3又5/6

2.16-7x=0.06

1/2x-0.5=5又1/2

8.16-1.26/0.3*1.5

=8.16-4.2*1.5

=8.16-6.3

=1.86

8.4*[(1.2+3又1/3)/3.4-1/2]

=8.4*[68/16/3.4-1/2]

=8.4*[5/4-1/2]

=8.4*3/4

=6.3

5.8:x=3又1/2:7

3.5x=7*5.8

x=7/3.5*5.8

x=2*5.8

x=11.6

3/10*55-4x=14.5

16.5-4x=14.5

4x=2

x=0.2

19.38-4又7/8-5又1/8

=1.938-(4又7/8+5又1/8)

=19.38-10

=9.38

13又7/13-(6又3/5+3又7/13)

=13又7/13-3又7/13-6又3/5

=10-6又3/5

=3.4

1又3/4+[2又3/14-(2又3/14-1.875)]/2又1/12

=1又3/4-15/8*12/25

=1又3/4-9/10

=0.85

(9.4-8又2/5)/[(1.1+1/15)*1又7/18]

=1/[7/6*25/18]

=1÷175/108

=108/175

谁有5年级100道简便计算题?

45+15×6= 250÷5×8= 6×5÷2×4= 30×3+8=

400÷4+20×5=10+12÷3+20=(80÷20)÷4=70+(10×5)=

360÷40= 40×20= 80-25= 70+45=

90×2= 16×6= 300×6= 540÷9=60

30×20= 400÷4=350-80=160+70=

18-64÷8= 42÷6+20=40-5×7=80+60÷3=

41+18÷2=75-11×5=42+7-29=5600÷80=

25×16=120×25=36×11=1025÷25=

336+70=25×9×4=200-33×3=3020-1010=

12×50=25×8=23×11=125÷25=

4200-2200=220+80=20×8×5=600-3×200=

20+20÷2=35-25÷5=36+8-40=2800÷40=

98÷14 =96÷24 =56÷14 =65÷13 =

75÷15 =120÷24 =200÷25 =800÷16 =

840÷21 =560÷14 =390÷13 =600÷15 =

72÷24 =85÷17 =90÷15 =96÷16 =

78÷26 =51÷17 =80÷40 =100÷20 =

100÷4 =240÷40 =920÷4 =300÷60=

64÷2 =64÷4 =50÷5 =60÷8 =

96÷4 =90÷6 =400+80 =80.400-80 =

40×80 =400÷80 =48÷16 =84.96÷24 =

160×5=4×250=0×518=88.10×76=

36×10= 15×6= 24×3= 5×18=

26×4= 7×15= 32×30= 40×15=

60×12= 23×30= 30×50= 5×700=

七年级整式计算题

1.3ab-4ab+8ab-7ab+ab=______.

2.7x-(5x-5y)-y=______.

3.23a3bc²-15ab²c+8abc-24a3bc²-8abc=______.

4.-7x²+6x+13x²-4x-5x²=______.

5.2y+(-2y+5)-(3y+2)=______.

6.(2x²-3xy+4y²)+(x²+2xy-3y²)=______.

7.2a-(3a-2b+2)+(3a-4b-1)=______.

8.-6x²-7x²+15x²-2x²=______.

9.2x-(x+3y)-(-x-y)-(x-y)=______.

10.2x+2y-[3x-2(x-y)]=______.

若需答案请追问;若满意,请采纳,谢谢!

5年 级5道简便计算题

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七年级下 计算题

幂的运算

例1.计算-a4·(-a)3·(-a)5

解:(1) (-)(-)2(-)3 分析:①(-)就是(-)1,指数为1

=(-)1+2+3 ②底数为-,不变。

初二上必刷计算题及答案

这不是一道题吗?

=|4/5-4/3-9|+24-9×5-16×[-1]³+[-125-3]÷4

=|-8/15-9|+24-45+16-32

=8/15+9+24-45+16-32

=-36-7/15

结果是-36又7/15。由于分数的横线形式写不了,只能写成这样了。

这道题主要考查了绝对值、乘方的知识点。

初一数学基础题100道

|4/5+2/3×(-12)÷6-(-3)²|+24+(-3)²×(-5)-4²×[(1-7)÷6]³+[(-5)³-3]÷(-2)² =8又7/15+24-45+16-32=8又7/15-37=-28又8/15

以上就是数学七年级计算题的全部内容,(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)初一上册数学计算题大全及答案。(15)(-2/)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/6初一数学计算题带答案。

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