求八年及下冊數學計算題帶答案,求八年級下冊數學計算題(人教版)100道

2022-10-09 21:35:24 字數 4888 閱讀 9990

1樓:匿名使用者

①5√8-2√32+√50

=5*3√2-2*4√2+5√2

=√2(15-8+5)

=12√2

②√6-√3/2-√2/3

=√6-√6/2-√6/3

=√6/6

③(√45+√27)-(√4/3+√125)=(3√5+3√3)-(2√3/3+5√5)=-2√5+7√5/3

④(√4a-√50b)-2(√b/2+√9a)=(2√a-5√2b)-2(√2b/2+3√a)=-4√a-6√2b

⑤√4x*(√3x/2-√x/6)

=2√x(√6x/2-√6x/6)

=2√x*(√6x/3)

=2/3*|x|*√6

⑥(x√y-y√x)÷√xy

=x√y÷√xy-y√x÷√xy

=√x-√y

⑦(3√7+2√3)(2√3-3√7)

=(2√3)^2-(3√7)^2

=12-63

=-51

⑧(√32-3√3)(4√2+√27)

=(4√2-3√3)(4√2+3√3)

=(4√2)^2-(3√3)^2

=32-27

=5 ⑨(3√6-√4)?

=(3√6)^2-2*3√6*√4+(√4)^2=54-12√6+4

=58-12√6

⑩(1+√2-√3)(1-√2+√3)

=[1+(√2-√3)][1-(√2-√3)]=1-(√2-√3)^2

=1-(2+3+2√6)

=-4-2√6

(1)5√12×√18

=5*2√3*3√2

=30√6;

求八年級下冊數學計算題(人教版)100道

2樓:趙明薈

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+222+(-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)/1/218-6/(-3)*(-2)

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

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

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

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

-5+21*8/2-6-59

68/21-8-11*8+61

-2/9-7/9-56

2.4-(-3/5)+(-3.1)+4/5(-6/13)+(-7/13)-(-2)

3/4-(-11/6)+(-7/3)

11+(-22)-3×(-11)

(-0.1)÷1/2×(-100)

2.4-(-3/5)+(-3.1)+4/5(-6/13)+(-7/13)-(-2)

3/4-(-11/6)+(-7/3)

11+(-22)-3×(-11)

(-0.1)÷1/2×(-100)

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+222+(-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)/1/218-6/(-3)*(-2)

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

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

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

-3x+2y-5x-7y.(-8)-(-1)2.45+(-30)

3.-1.5-(-11.5)

4.-1/4-(-1/2)

5.15-[1-(20-4)]

6.-40-28-(-19)+(-24)

7.22.54+(-4.4)+(-12.54)+4.48.(2/3-1/2)-(1/3-5/6)7(2x-1)-3(4x-1)=4(3x+2)-1;

(5y+1)+ (1-y)= (9y+1)+ (1-3y);

20%+(1-20%)(320-x)=320×40%2(x-2)+2=x+1

2(x-2)-3(4x-1)=9(1-x)x/3 -5 = (5-x)/2

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

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

x/3 -1 = (1-x)/2

(x-2)/2 - (3x-2)/4 =-111x+64-2x=100-9x

15-(8-5x)=7x+(4-3x)

3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22(x-2)-3(4x-1)=9(1-x)11x+64-2x=100-9x

15-(8-5x)=7x+(4-3x)

3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22(x-2)+2=x+1

1.7(2x-1)-3(4x-1)=4(3x+2)-12.(5y+1)+ (1-y)= (9y+1)+ (1-3y)3.[ (- 2)-4 ]=x+2

4.20%+(1-20%)(320-x)=320×40%5.2(x-2)+2=x+1

6.2(x-2)-3(4x-1)=9(1-x)7.11x+64-2x=100-9x

8.15-(8-5x)=7x+(4-3x)9.3(x-7)-2[9-4(2-x)]=2210.3/2[2/3(1/4x-1)-2]-x=211.5x+1-2x=3x-2

12.3y-4=2y+1

13.87x*13=5

14.7z/93=41

15.15x+863-65x=54

16.58y*55=27489

17.2(x+2)+4=9

18.2(x+4)=10

19.3(x-5)=18

20.4x+8=2(x-1)

21.3(x+3)=9+x

22.6(x/2+1)=12

23.9(x+6)=63

24.2+x=2(x-1/2)

25.8x+3(1-x)=-2

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

27.x/3 -5 = (5-x)/2

28.2(x+1) /3=5(x+1) /6 -129.(1/5)x +1 =(2x+1)/430.

(5-2)/2 - (4+x)/3 =115x-8(5x+1.5)=18*1.25+x3x+189=521

4y+119=22

3x*189=5

8z/6=458

3x+77=59

4y-6985=81

87x*13=5

7z/93=41

15x+863-65x=54

58y*55=27489

1. 2(x-2)-3(4x-1)=9(1-x)2. 11x+64-2x=100-9x

3. 15-(8-5x)=7x+(4-3x)4. 3(x-7)-2[9-4(2-x)]=225.

3/2[2/3(1/4x-1)-2]-x=26. 2(x-2)+2=x+1

7. 0.4(x-0.2)+1.5=0.7x-0.388. 30x-10(10-x)=100

9. 4(x+2)=5(x-2)

10. 120-4(x+5)=25

11. 15x+863-65x=54

12. 12.3(x-2)+1=x-(2x-1)13. 11x+64-2x=100-9x14. 14.59+x-25.31=0

15. x-48.32+78.51=8016. 820-16x=45.5×8

17. (x-6)×7=2x

18. 3x+x=18

19. 0.8+3.2=7.2

20. 12.5-3x=6.5

21. 1.2(x-0.64)=0.5422. x+12.5=3.5x

23. 8x-22.8=1.2

24. 1\ 50x+10=60

25. 2\ 60x-30=20

26. 3\ 3^20x+50=110

27. 4\ 2x=5x-3

28. 5\ 90=10+x

29. 6\ 90+20x=30

30. 7\ 691+3x=700

1 2x-10.3x=15

2 0.52x-(1-0.52)x=803 x/2+3x/2=7

4 3x+7=32-2x

5 3x+5(138-x)=540

6 3x-7(x-1)=3-2(x+3)7 18x+3x-3=18-2(2x-1)8 3(20-y)=6y-4(y-11)9 -(x/4-1)=5

10 3[4(5y-1)-8]=6

(1)-3x-6x2=7

(2)5x+1-2x=3x-2

(3)3y-4=2y+1

(4)3y-4=y+3

(5)3y-y=3+4

(6)0.4x-3=0.1x+2

(7)5x+15-2x-2=10

(8)2x-4+5-5x=-1

(9)3x+189=521

(10)4y+119=22

(11)3x*189=5

(12)8z/6=458

(13)3x+77=59

(14)4y-6985=81

(15)87x*13=5

(16)46/x=23 x=2

(17)64/x=8 x=8

(18)99/x=11 x=9

求四年級下冊數學脫式計算題120道我沒有學方程

查查自己是否真的存在著這樣問題進行到底 用脫式計算下面各題。1 125 25 6 2 135 75 14 5 3 120 60 5 5 4 1024 16 3 5 135 415 5 16 6 1200 20 720 720 15 7 360 144 24 3 8 240 480 30 6 13 9...

五年級下冊混合運算題,五年級下冊數學計算題

1.45 15 6 135 2.250 5 8 400 3.6 5 2 4 60 4.30 3 8 98 5.400 4 20 5 200 6.10 12 3 20 34 7.80 20 80 4 21 8.70 100 10 5 120 9.360 40 10 19 10.40 20 200 60...

小學四年級下冊數學小數乘法豎式計算題200道

120 84 284 58 480 70 828 40 285 70 182 90 120 86 980 26 828 67 520 38 61 110 小學四年級小數乘法200道 5.3 6.3 2.3 4.4 7.3 5.3 4 8.8 1.5 4.1 0.8 0.2 9.9 1.4 0.6 6...