急求初一數學有理數混合運算60題

時間 2021-08-11 17:16:00

1樓:小曖昧

(1) (-9)-(-13)+(-20)+(-2)

(2) 3+13-(-7)/6

(3) (-2)-8-14-13

(4) (-7)*(-1)/7+8

(5) (-11)*4-(-18)/18

(6) 4+(-11)-1/(-3)

(7) (-17)-6-16/(-18)

(8) 5/7+(-1)-(-8)

(9) (-1)*(-1)+15+1

(10) 3-(-5)*3/(-15)

(11) 6*(-14)-(-14)+(-13)

(12) (-15)*(-13)-(-17)-(-4)

(13) (-20)/13/(-7)+11

(14) 8+(-1)/7+(-4)

(15) (-13)-(-9)*16*(-12)

(16) (-1)+4*19+(-2)

(17) (-17)*(-9)-20+(-6)

(18) (-5)/12-(-16)*(-15)

(19) (-3)-13*(-5)*13

(20) 5+(-7)+17-10

(21) (-10)-(-16)-13*(-16)

(22) (-14)+4-19-12

(23) 5*13/14/(-10)

(24) 3*1*17/(-10)

(25) 6+(-12)+15-(-15)

(26) 15/9/13+(-7)

(27) 2/(-10)*1-(-8)

(28) 11/(-19)+(-14)-5

(29) 19-16+18/(-11)

(30) (-1)/19+(-5)+1

(31) (-5)+19/10*(-5)

(32) 11/(-17)*(-13)*12

(33) (-8)+(-10)/8*17

(34) 7-(-12)/(-1)+(-12)

(35) 12+12-19+20

(36) (-13)*(-11)*20+(-4)

(37) 17/(-2)-2*(-19)

(38) 1-12*(-16)+(-9)

(39) 13*(-14)-15/20

(40) (-15)*(-13)-6/(-9)

(41)3.28-4.76+1 ;

(42)2.75-2 -3 +1 ;

(43)42÷(-1 )-1 ÷(-0.125);

(44)(-48) ÷82-(-25) ÷(-6)2;

(45)- (2.5 )×(-2.4).

(46)-23 ×(-13)*2÷(- )2;

(47)-14-(2-0.5)× ×[( )2-( )3];

(48)-1 ×[1-3×(- )2]-( - )2×(-2)3÷(- )3

(49)(0.12+0.32) ÷ [-22+(-3)2-3 ];

(50)-6.24×32+31.2×(-2)3+(-0.51) ×624.

(51) 120-36×4÷18+35

(52)10.15-10.75×0.4-5.7

(53)5.8×(3.87-0.13)

(54)+4.2×3.74 347+45×2-4160÷52

(55)32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)

(56)[(7.1-5.6)×0.9-1.15] ÷2.5 (3.2×1.5+2.5)÷1.6

(57)5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6

(58)3.2×6+(1.5+2.5)÷1.6 (3.2×1.5+2.5)÷1.6

(59)5.8×(3.87-0.13)+4.2×3.74

(60)33.02-(148.4-90.85)÷2.5

2樓:會號你好

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

-(-89)+|-87|-23+[-75-(7)+76]-(10+39-24)

|-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2)

[-(-84)+46]-|-9.1|+(+1.9)

[-(-90)+(-34)]-(+43)+(-57)+10

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)

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

(-5)-(+3)+(-9)-(-7)

(-5)+(+8)-(+2)-(-3)

5-(-3 )-(+7)-2

(-21)+(+16)-(-13)-(+7)+(-6)

2 -(-2 )+(-0.5)+(+2)-(+6 )-2

(-7)-(+5)+(+3)-(-9)

-(+2 )-(-1 )-(+3 )

-14 5 (-3)=-12

-12 (-7) (-5) (-6)

23.33-(+76.76)

(-6-24.3)-(-12+9.1)+(0-2.1)

6+(7-8)

(-78)+25+26+27

(-3)+(-2)+(-1)

39+28+26-125

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

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

(-2)+7-(-16)-(-3)

(-5)-(+3)+(-9)-(-7)

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

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

(-5)+(-8)-(-2)-3

(-21)+(+16)-(-13)-(+7)+(-6)

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

(-0.73)+(-0.62)-(+0.75)

(-19)+(-11)-(-33)+27

(-6.4)+(-3.6)-(-12.5)+4.5

(-81)+(-19)-27+33

(-3.2)-(-6.2)+(-5.1)+(-4.9)

(-6.9)+(-3.1)+(+2.7)+(-2.1)

3.把下列各式寫成省略括號的和的形式,並說出它們的兩種讀法:(8′×2=16′)

(1)(-21)+(+16)-(-13)-(+7)+(-6);

(2)-2 -(- 2)+(-0.5)+(+2)-(+ 6)-2.

計算 (1)-1+2-3+4-5+6-7;

(2)-50-28+(-24)-(-22);

(3)-19.8-(-20.3)-(+20.2)-10.8;

(4)0.25- (-1 )-(+3 ).

就下列給的三組數,驗證等式:

a-(b-c+d)=a-b+c-d是否成立.

(1)a=-2,b=-1,c=3,d=5;

(2)a=23 ,b=-8,c=-1 ,d=1 .

計算-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

3樓:柔淚斷腸

98a+40b*(0.6a+30b-80c)201+(-40a-18b*80b)

-40a+60b-20b

51a+30b-20a

2a+4(a+b+3b)

352a+54b+2(60a+b)*2

求初一計算題(解方程+化簡求值+有理數混合運算)60道(各30題)

4樓:o肉包兒

解方程1)87x+2y=7733

20x+32y=4364

答案:x=87 y=82

2)44x+60y=6340

15x+42y=4122

答案:x=20 y=91

3)11x+74y=3548

71x+45y=4730

答案:x=40 y=42

4)53x+54y=3229

70x+43y=2877

答案:x=11 y=49

5)43x+9y=801

76x+16y=1420

答案:x=9 y=46

6)55x+32y=6161

45x+84y=10707

答案:x=55 y=98

7)47x+27y=5396

94x+55y=10870

答案:x=70 y=78

8)33x+49y=4237

92x+2y=6428

答案:x=69 y=40

9)0x+56y=3920

64x+90y=9244

答案:x=46 y=70

10)91x+8y=4696

51x+66y=5154

答案:x=48 y=41

11)76x+90y=12152

52x+0y=4004

答案:x=77 y=70

12)47x+55y=6777

19x+48y=4131

答案:x=81 y=54

13)99x+57y=6558

85x+46y=5563

答案:x=53 y=23

14)26x+73y=7814

69x+65y=8379

答案:x=31 y=96

15)78x+35y=6814

10x+52y=2394

答案:x=73 y=32

16)21x+34y=3444

30x+35y=4350

答案:x=96 y=42

17)76x+64y=6048

54x+78y=6444

答案:x=24 y=66

18)25x+78y=9164

72x+61y=11992

答案:x=92 y=88

19)57x+62y=7419

18x+71y=7125

答案:x=29 y=93

20)53x+16y=1665

0x+2y=122

答案:x=13 y=61

21)26x+88y=5346

18x+76y=4274

答案:x=77 y=38

22)45x+61y=3848

88x+91y=6450

答案:x=34 y=38

23)98x+42y=11088

4x+32y=2512

答案:x=84 y=68

24)18x+86y=9558

60x+43y=7737

答案:x=58 y=99

25)11x+96y=5708

66x+13y=1031

答案:x=4 y=59

26)53x+12y=3567

94x+69y=7233

答案:x=63 y=19

27)70x+16y=3508

63x+16y=3186

答案:x=46 y=18

28)0x+10y=940

66x+20y=4850

答案:x=45 y=94

29)39x+66y=7791

55x+22y=5159

答案:x=61 y=82

30)11x+74y=4537

12x+1y=405

答案:x=29 y=57

化簡求值

3.3ab-4ab+8ab-7ab+ab=______.

4.7x-(5x-5y)-y=______.

5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.

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

7.2y+(-2y+5)-(3y+2)=______.

11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.

12.2a-(3a-2b+2)+(3a-4b-1)=______.

13.-6x2-7x2+15x2-2x2=______.

14.2x-(x+3y)-(-x-y)-(x-y)=______.

16.2x+2y-[3x-2(x-y)]=______.

17.5-(1-x)-1-(x-1)=______.

18.( )+(4xy+7x2-y2)=10x2-xy.

19.(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.

21.已知a=x3-2x2+x-4,b=2x3-5x+3,計算a+b=______.

22.已知a=x3-2x2+x-4,b=2x3-5x+3,計算a-b=______.

23.若a=-0.2,b=0.5,代數式-(|a2b|-|ab2|)的值為______.

25.乙個多項式減去3m4-m3-2m+5得-2m4-3m3-2m2-1,那麼這個多項式等於______.

26.-(2x2-y2)-[2y2-(x2+2xy)]=______.

27.若-3a3b2與5ax-1by+2是同類項,則x=______,y=______.

28.(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.

29.化簡代數式4x2-[7x2-5x-3(1-2x+x2)]的結果是______.

30.2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( ).

31.3a-(2a-3b)+3(a-2b)-b=______.

32.化簡代數式x-[y-2x-(x+y)]等於______.

33.[5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1.

34.3x-[y-(2x+y)]=______.

35.化簡|1-x+y|-|x-y|(其中x<0,y>0)等於______.

36.已知x≤y,x+y-|x-y|=______.

37.已知x<0,y<0,化簡|x+y|-|5-x-y|=______.

38.4a2n-an-(3an-2a2n)=______.

39.若乙個多項式加上-3x2y+2x2-3xy-4得

2x2y+3xy2-x2+2xy,

則這個多項式為______.

40.-5xm-xm-(-7xm)+(-3xm)=______.

41.當a=-1,b=-2時,

[a-(b-c)]-[-b-(-c-a)]=______.

43.當a=-1,b=1,c=-1時,

-[b-2(-5a)]-(-3b+5c)=______.

44.-2(3x+z)-(-6x)+(-5y+3z)=______.

45.-5an-an+1-(-7an+1)+(-3an)=______.

46.3a-(2a-4b-6c)+3(-2c+2b)=______.

48.9a2+[7a2-2a-(-a2+3a)]=______.

50.當2y-x=5時,5(x-2y)2-3(-x+2y)-100=______.

有理數混合運算

:(1)-5-9+3; (2)10-17+8;

(3)-3-4+19-11; (4)-8+12-16-23.

2.計算:

(1)-4.2+5.7-8.4+10; (2)6.1-3.7-4.9+1.8;

3.計算:

(1)(-36)-(-25)-(+36)+(+72); (2)(-8)-(-3)+(+5)-(+9);

(3) ; (4)-9+(-3 )+3 ;

4.計算:

(1)12-(-18)+(-7)-15;

(2)-40-28-(-19)+(-24)-(-32);

(3)4.7-(-8.9)-7.5+(-6);

答案:1、(1)-11;(2)1;(3)1;(4)-35

2、(1)3.1;(2)-0.7;(3) ;(4)

3、(1)25;(2)-9;(3) ;(4)-9

4、(1)8;(2)-41;(3)0.1

[-|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

(1)-1+2-3+4-5+6-7;

(2)-50-28+(-24)-(-22);

(3)-19.8-(-20.3)-(+20.2)-10.8;

(4)0.25- +(-1 )-(+3 ).

8-4÷(-2); 12、-9+5×(-6)-12÷(-6)

14、-1-〔1-(1-0.6÷3)〕×〔2-(-3)×(-4)〕;

20、0÷(-4)-42-(-8)÷(-1)3;

21、-32-(-3) 2-(-3)3+(-1)6;

24、3×(-2)2+(-2×3)2+(-2+3)2;

34、(-12)÷4×(-6)÷2;

36、(-12)÷4×(-6)÷2;

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