求初一的计算题!!!!!!急用` 求初一数学300道计算题！！！急！！！回答的好再加分！！！
\u521d\u4e00\u7edd\u5bf9\u503c\u8ba1\u7b97\u9898100\u9053\uff01\u6025\u7528\uff0c\u6211\u662f\u5b66\u751f\uff0c\u4f5c\u4e1a\uff01\uff01\uff0132.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
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)
9.
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)
\u6709\u7406\u6570\u7ec3\u4e60
\u7ec3\u4e60\u4e00(B\u7ea7)
(\u4e00)\u8ba1\u7b97\u9898:
(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)
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)
9.
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)
(\u4e8c)\u7528\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b97:
(1)(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(\u4e09)\u5df2\u77e5:X=+17(3/4),Y=-9(5/11),Z=-2.25,
\u6c42:(-X)+(-Y)+Z\u7684\u503c
(\u56db)\u7528">","0,\u5219a-ba (C)\u82e5ba (D)\u82e5a<0,ba
\uff0d38\uff09\uff0b52\uff0b118\uff0b\uff08\uff0d62\uff09\uff1d
\uff08\uff0d32\uff09\uff0b68\uff0b\uff08\uff0d29\uff09\uff0b\uff08\uff0d68\uff09\uff1d
\uff08\uff0d21\uff09\uff0b251\uff0b21\uff0b\uff08\uff0d151\uff09\uff1d
12\uff0b35\uff0b\uff08\uff0d23\uff09\uff0b0\uff1d
\u5229\u7528\u6709\u7406\u6570\u7684\u52a0\u6cd5\u89e3\u4e0b\u97622\u9898
(1)\u738b\u8001\u4f2f\u4e0a\u8857\u65f6\u5e26\u6709\u73b0\u91d1550\u5143,\u8d2d\u7269\u7528\u53bb260\u5143,\u53c8\u53bb\u94f6\u884c\u53d6\u6b3e150\u5143,\u73b0\u5728\u738b\u8001\u4f2f\u8eab\u4e0a\u8fd8\u6709\u591a\u5c11\u73b0\u91d1?
(2)\u6f5c\u6c34\u8247\u539f\u505c\u5728\u6d77\u9762\u4e0b800\u7c73\u5904,\u5148\u6d6e\u4e0a150\u7c73,\u53c8\u4e0b\u6f5c200\u7c73,\u8fd9\u65f6\u6f5c\u6c34\u8247\u5728\u6d77\u9762\u4e0b\u591a\u5c11\u7c73\u5904?
\uff08-6\uff09+8+\uff08-4\uff09+12
3\u53c81/4+\uff08-2\u53c83/5\uff09+5\u53c83/4+\uff08-8\u53c82/5\uff09
9+\uff08-7\uff09+10+\uff08-3\uff09+\uff08-9\uff09
27+\uff08-26\uff09+33+\uff08-27\uff09
\uff08+4\u53c85/8\uff09+\uff08-3.257\uff09+\uff08-4.625)
23+\uff08-17\uff09+6+\uff08-22\uff09
-2+3+1+\uff08-3\uff09+2+\uff08-4\uff09
23+(-73)
(-84)+(-49)
7+(-2.04)
4.23+(-7.57)
7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+17/7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(-4)(+6)(-7)
(-27)(-25)(-3)(-4)
0.001*(-0.1)*(1.1)
24*(-5/4)*(-12/15)*(-0.12)
(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(-24/7)(11/8+7/3-3.75)*24
(-71/8)*(-23)-23*(-73/8)
(-7/15)*(-18)*(-45/14)
(-2.2)*(+1.5)*(-7/11)*(-2/7)
[-|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
\u6709\u7406\u6570\u7684\u52a0\u51cf\u6df7\u5408\u8fd0\u7b97
\u3010\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1\uff0e\u9009\u62e9\u9898\uff1a
\uff081\uff09\u628a-2-\uff08+3\uff09-\uff08-5\uff09+\uff08-4\uff09+\uff08+3\uff09\u5199\u6210\u7701\u7565\u62ec\u53f7\u548c\u7684\u5f62\u5f0f\uff0c\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e-2-3-5-4+3 B\uff0e-2+3+5-4+3
C\uff0e-2-3+5-4+3 D\uff0e-2-3-5+4+3
\uff082\uff09\u8ba1\u7b97\uff08-5\uff09-\uff08+3\uff09+\uff08-9\uff09-\uff08-7\uff09+ \u6240\u5f97\u7ed3\u679c\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e-10 B\uff0e-9 C\uff0e8 D\uff0e-23
\uff083\uff09-7\uff0c-12\uff0c+2\u7684\u4ee3\u6570\u548c\u6bd4\u5b83\u4eec\u7684\u7edd\u5bf9\u503c\u7684\u548c\u5c0f\uff08 \uff09
A\uff0e-38 B\uff0e-4 C\uff0e4 D\uff0e38
\uff084\uff09\u82e5 +\uff08b+3\uff092=0,\u5219b-a- \u7684\u503c\u662f\uff08 \uff09
A\uff0e-4 B\uff0e-2 C\uff0e-1 D\uff0e1
\uff085\uff09\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e\u4e24\u4e2a\u8d1f\u6570\u76f8\u51cf\uff0c\u7b49\u4e8e\u7edd\u5bf9\u503c\u76f8\u51cf
B\uff0e\u4e24\u4e2a\u8d1f\u6570\u7684\u5dee\u4e00\u5b9a\u5927\u4e8e\u96f6
C\uff0e\u6b63\u6570\u51cf\u53bb\u8d1f\u6570\uff0c\u5b9e\u9645\u662f\u4e24\u4e2a\u6b63\u6570\u7684\u4ee3\u6570\u548c
D\uff0e\u8d1f\u6570\u51cf\u53bb\u6b63\u6570\uff0c\u7b49\u4e8e\u8d1f\u6570\u52a0\u4e0a\u6b63\u6570\u7684\u7edd\u5bf9\u503c
\uff086\uff09\u7b97\u5f0f-3-5\u4e0d\u80fd\u8bfb\u4f5c\uff08 \uff09
A\uff0e-3\u4e0e5\u7684\u5dee B\uff0e-3\u4e0e-5\u7684\u548c
C\uff0e-3\u4e0e-5\u7684\u5dee D\uff0e-3\u51cf\u53bb5
2\uff0e\u586b\u7a7a\u9898\uff1a\uff084\u2032\u00d74=16\u2032\uff09
\uff081\uff09-4+7-9=- - + \uff1b
\uff082\uff096-11+4+2=- + - + \uff1b
\uff083\uff09\uff08-5\uff09+\uff08+8\uff09-\uff08+2\uff09-\uff08-3\uff09= + - + \uff1b
\uff084\uff095-\uff08-3 \uff09-\uff08+7\uff09-2 =5+ - - + - .
3\uff0e\u628a\u4e0b\u5217\u5404\u5f0f\u5199\u6210\u7701\u7565\u62ec\u53f7\u7684\u548c\u7684\u5f62\u5f0f\uff0c\u5e76\u8bf4\u51fa\u5b83\u4eec\u7684\u4e24\u79cd\u8bfb\u6cd5\uff1a\uff088\u2032\u00d72=16\u2032\uff09
\uff081\uff09\uff08-21\uff09+\uff08+16\uff09-\uff08-13\uff09-\uff08+7\uff09+\uff08-6\uff09\uff1b
\uff082\uff09-2 -\uff08- \uff09+\uff08-0.5\uff09+(+2)-(+ )-2.
4.\u8ba1\u7b97\u9898(6\u2032\u00d74=24\u2032)
(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 ).
5.\u5f53x=-3.7,y=-1.8,z=-1.5\u65f6,\u6c42\u4e0b\u5217\u4ee3\u6570\u5f0f\u7684\u503c(5\u2032\u00d74=20\u2032)
(1)x+y-z; (2)-x-y+z; (3)-x+y+z; (4)x-y-z.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
(1) (-7)-(+5)+(+3)-(-9)=-7 5 3 9;
(2)-(+2 )-(-1 )-(+3 )+(- )
=( 2 )+( 1 )+( 3 )+( );
(3)-14 5 (-3)=-12;
(4)-12 (-7) (-5) (-6)=-16;
(5)b-a-(+c)+(-d)= a b c d;
2.\u5f53x= ,y=- ,z=- \u65f6,\u5206\u522b\u6c42\u51fa\u4e0b\u5217\u4ee3\u6570\u5f0f\u7684\u503c;
(1)x-(-y)+(-z); (2)x+(-y)-(+z);
(3)-(-x)-y+z; (4)-x-(-y)+z.
3.\u5c31\u4e0b\u5217\u7ed9\u7684\u4e09\u7ec4\u6570,\u9a8c\u8bc1\u7b49\u5f0f\uff1a
a-(b-c+d)=a-b+c-d\u662f\u5426\u6210\u7acb.
(1)a=-2,b=-1,c=3,d=5;
(2)a=23 ,b=-8,c=-1 ,d=1 .
4.\u8ba1\u7b97\u9898
(1)-1-23.33-(+76.76);
(2)1-2*2*2*2;
(3)(-6-24.3)-(-12+9.1)+(0-2.1);
(4)-1+8-7
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
\u67d0\u6c34\u5229\u52d8\u5bdf\u961f,\u7b2c\u4e00\u5929\u5411\u4e0a\u6e38\u8d705 \u5343\u7c73,\u7b2c\u4e8c\u5929\u53c8\u5411\u4e0a\u6e38\u8d705 ,\u7b2c\u4e09\u5929\u5411\u4e0b\u6e38\u8d704 \u5343\u7c73,\u7b2c\u56db\u5929\u53c8\u5411\u4e0b\u6e38\u8d704.5\u5343\u7c73,\u8fd9\u65f6\u52d8\u5bdf\u961f\u5728\u51fa\u53d1\u70b9\u7684\u54ea\u91cc?\u76f8\u8ddd\u591a\u5c11\u5343\u7c73?
\u53c2\u8003\u7b54\u6848\uff1a
\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1.(1)C;(2)B;(3)D;(4)A;(5)C;(6)C 2.(1)4,(-7),(-9) (2)(-6),(-11),(-4),2; (3)-5,8,2,3; (4)3,7,2;
3.\u75654.(1)-4; (2)-80; (3)-30.5 (4)-5
5.(1)-4; (2)4; (3)0.4; (4)-0.4.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.(1)-,+,+; (2)-,+,-,-; (3)+,+; (4)-,+,+; (5)-,+,-,-.
2.(1) (2) (3) (4)-
3.(1) (2)\u90fd\u6210\u7acb.
4.(1)-
(2)
(3)-29.5
(4)-1 \u7b2c(4)\u9898\u6ce8\u610f\u540c\u53f7\u7684\u6570\u3001\u4e92\u4e3a\u76f8\u53cd\u6570\u5148\u5206\u522b\u7ed3\u5408\u3002
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
1\uff0e\u4e0a\u6e381 \u5343\u7c73
1.125*3+125*5+25*3+25
2.9999*3+101*11*(101-92)
3.(23/4-3/4)*(3*6+2)
4. 3/7 \u00d7 49/9 - 4/3
5. 8/9 \u00d7 15/36 + 1/27
6. 12\u00d7 5/6 \u2013 2/9 \u00d73
7. 8\u00d7 5/4 + 1/4
8. 6\u00f7 3/8 \u2013 3/8 \u00f76
9. 4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
10. 5/2 -\uff08 3/2 + 4/5 \uff09
11. 7/8 + \uff08 1/8 + 1/9 \uff09
12. 9 \u00d7 5/6 + 5/6
13. 3/4 \u00d7 8/9 - 1/3
14. 7 \u00d7 5/49 + 3/14
15. 6 \u00d7\uff08 1/2 + 2/3 \uff09
16. 8 \u00d7 4/5 + 8 \u00d7 11/5
17. 31 \u00d7 5/6 \u2013 5/6
18. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
19. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
20. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
21. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
22. 17/32 \u2013 3/4 \u00d7 9/24
23. 3 \u00d7 2/9 + 1/3
24. 5/7 \u00d7 3/25 + 3/7
25. 3/14 \u00d7\u00d7 2/3 + 1/6
26. 1/5 \u00d7 2/3 + 5/6
27. 9/22 + 1/11 \u00f7 1/2
28. 5/3 \u00d7 11/5 + 4/3
29. 45 \u00d7 2/3 + 1/3 \u00d7 15
30. 7/19 + 12/19 \u00d7 5/6
31. 1/4 + 3/4 \u00f7 2/3
32. 8/7 \u00d7 21/16 + 1/2
33. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
34.50\uff0b160\u00f740
35.120-144\u00f718+35
36.347+45\u00d72-4160\u00f752
37\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
38.95\u00f7\uff0864-45\uff09
39.178-145\u00f75\u00d76+42
40.812-700\u00f7\uff089+31\u00d711\uff09
41.85+14\u00d7\uff0814+208\u00f726\uff09
43.120-36\u00d74\u00f718+35
44.\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
45.(6.8-6.8\u00d70.55)\u00f78.5
46.0.12\u00d7 4.8\u00f70.12\u00d74.8
47.\uff083.2\u00d71.5+2.5\uff09\u00f71.6
48.6-1.6\u00f74= 5.38+7.85-5.37=
49.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
50.6.5\u00d7\uff084.8-1.2\u00d74\uff09=
51.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
52.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
53.[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5
54.5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62]
55.12\u00d76\u00f7\uff0812-7.2\uff09-6
56.12\u00d76\u00f77.2-6
57.0.68\u00d71.9+0.32\u00d71.9
58.58+370\uff09\u00f7\uff0864-45\uff09
59.420+580-64\u00d721\u00f728
60.136+6\u00d7\uff0865-345\u00f723\uff09
15-10.75\u00d70.4-5.7
62.18.1\uff0b\uff083\uff0d0.299\u00f70.23\uff09\u00d71
63.(6.8-6.8\u00d70.55)\u00f78.5
64.0.12\u00d7 4.8\u00f70.12\u00d74.8
65.\uff083.2\u00d71.5+2.5\uff09\u00f71.6
66.3.2\u00d76+\uff081.5+2.5\uff09\u00f71.6
67.0.68\u00d71.9+0.32\u00d71.9
68.10.15-10.75\u00d70.4-5.7
69.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
70.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
71.[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5
72.5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62]
73.12\u00d76\u00f7\uff0812-7.2\uff09-6
74.12\u00d76\u00f77.2-6
75.33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
1) 76.(25%-695%-12%)*36
77./4*3/5+3/4*2/5
78.1-1/4+8/9/7/9
79.+1/6/3/24+2/21
80./15*3/5
81.3/4/9/10-1/6
82./3+1/2)/5/6-1/3]/1/7
83./5+3/5/2+3/4
84.(2-2/3/1/2)]*2/5
85.+5268.32-2569
86.3+456-52*8
87.5%+6325
88./2+1/3+1/4
2) 89+456-78
3) 5%+. 3/7 \u00d7 49/9 - 4/3
4) 9 \u00d7 15/36 + 1/27
5) 2\u00d7 5/6 \u2013 2/9 \u00d73
6) 3\u00d7 5/4 + 1/4
7) 94\u00f7 3/8 \u2013 3/8 \u00f76
8) 95/7 \u00d7 5/9 + 3/7 \u00d7 5/9
9) 6/2 -\uff08 3/2 + 4/5 \uff09
10) 8 + \uff08 1/8 + 1/9 \uff09
11) 8 \u00d7 5/6 + 5/6
12) 1/4 \u00d7 8/9 - 1/3
13) 10 \u00d7 5/49 + 3/14
14) 1.5 \u00d7\uff08 1/2 + 2/3 \uff09
15) 2\uff0f9 \u00d7 4/5 + 8 \u00d7 11/5
16) 3.1 \u00d7 5/6 \u2013 5/6
17) 4/7 - \uff08 2/7 \u2013 10/21 \uff09
18) 19 \u00d7 18 \u2013 14 \u00d7 2/7
19) 5 \u00d7 25/16 + 2/3 \u00d7 3/4
20) 4 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
21) 7/32 \u2013 3/4 \u00d7 9/24
22) 1\u3001 2/3\u00f71/2\uff0d1/4\u00d72/5
2\u3001 2\uff0d6/13\u00f79/26\uff0d2/3
3\u3001 2/9\uff0b1/2\u00f74/5\uff0b3/8
4\u3001 10\u00f75/9\uff0b1/6\u00d74
5\u3001 1/2\u00d72/5\uff0b9/10\u00f79/20
6\u3001 5/9\u00d73/10\uff0b2/7\u00f72/5
7\u3001 1/2\uff0b1/4\u00d74/5\uff0d1/8
8\u3001 3/4\u00d75/7\u00d74/3\uff0d1/2
9\u3001 23\uff0d8/9\u00d71/27\u00f71/27
10\u3001 8\u00d75/6\uff0b2/5\u00f74
11\u3001 1/2\uff0b3/4\u00d75/12\u00d74/5
12\u3001 8/9\u00d73/4\uff0d3/8\u00f73/4
13\u3001 5/8\u00f75/4\uff0b3/23\u00f79/11
23) 1.2\u00d72.5+0.8\u00d72.5
24) 8.9\u00d71.25-0.9\u00d71.25
25) 12.5\u00d77.4\u00d70.8
26) 9.9\u00d76.4-\uff082.5+0.24\uff09\uff0827\uff09 6.5\u00d79.5+6.5\u00d70.5
0.35\u00d71.6+0.35\u00d73.4
0.25\u00d78.6\u00d74
6.72-3.28-1.72
0.45+6.37+4.55
5.4+6.9\u00d73-\uff0825-2.5\uff092\u00d741846-620-380
4.8\u00d746+4.8\u00d754
0.8+0.8\u00d72.5
1.25\u00d73.6\u00d78\u00d72.5-12.5\u00d72.4
28\u00d712.5-12.5\u00d720
23.65-\uff083.07+3.65\uff09
\uff084+0.4\u00d70.25\uff098\u00d77\u00d71.25
1.65\u00d799+1.65
27.85-\uff087.85+3.4\uff09
48\u00d71.25+50\u00d71.25\u00d70.2\u00d78
7.8\u00d79.9+0.78
(1010+309+4+681+6\uff09\u00d712
3\u00d79146\u00d7782\u00d76\u00d7854
5.15\u00d77/8+6.1-0.60625
1. 3/7 \u00d7 49/9 - 4/3
2. 8/9 \u00d7 15/36 + 1/27
3. 12\u00d7 5/6 \u2013 2/9 \u00d73
4. 8\u00d7 5/4 + 1/4
5. 6\u00f7 3/8 \u2013 3/8 \u00f76
6. 4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
7. 5/2 -\uff08 3/2 + 4/5 \uff09
8. 7/8 + \uff08 1/8 + 1/9 \uff09
9. 9 \u00d7 5/6 + 5/6
10. 3/4 \u00d7 8/9 - 1/3
11. 7 \u00d7 5/49 + 3/14
12. 6 \u00d7\uff08 1/2 + 2/3 \uff09
13. 8 \u00d7 4/5 + 8 \u00d7 11/5
14. 31 \u00d7 5/6 \u2013 5/6
15. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
16. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
17. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
18. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
19. 17/32 \u2013 3/4 \u00d7 9/24
20. 3 \u00d7 2/9 + 1/3
21. 5/7 \u00d7 3/25 + 3/7
22. 3/14 \u00d7\u00d7 2/3 + 1/6
23. 1/5 \u00d7 2/3 + 5/6
24. 9/22 + 1/11 \u00f7 1/2
25. 5/3 \u00d7 11/5 + 4/3
26. 45 \u00d7 2/3 + 1/3 \u00d7 15
27. 7/19 + 12/19 \u00d7 5/6
28. 1/4 + 3/4 \u00f7 2/3
29. 8/7 \u00d7 21/16 + 1/2
30. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
31.50\uff0b160\u00f740 \uff0858+370\uff09\u00f7\uff0864-45\uff09
32.120-144\u00f718+35
33.347+45\u00d72-4160\u00f752
34\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
35.95\u00f7\uff0864-45\uff09
36.178-145\u00f75\u00d76+42 420+580-64\u00d721\u00f728
37.812-700\u00f7\uff089+31\u00d711\uff09 \uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09
38.85+14\u00d7\uff0814+208\u00f726\uff09
39.\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
40.120-36\u00d74\u00f718+35
41.\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
42.(6.8-6.8\u00d70.55)\u00f78.5
43.0.12\u00d7 4.8\u00f70.12\u00d74.8
44.\uff083.2\u00d71.5+2.5\uff09\u00f71.6 \uff082\uff093.2\u00d7\uff081.5+2.5\uff09\u00f71.6
45.6-1.6\u00f74= 5.38+7.85-5.37=
46.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
47.6.5\u00d7\uff084.8-1.2\u00d74\uff09= 0.68\u00d71.9+0.32\u00d71.9
48.10.15-10.75\u00d70.4-5.7
49.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
50.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
51.[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5
52.5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62]
53.12\u00d76\u00f7\uff0812-7.2\uff09-6 \uff084\uff0912\u00d76\u00f77.2-6
102\u00d74.5
7.8\u00d76.9\uff0b2.2\u00d76.9
5.6\u00d70.25
8\u00d7\uff0820\uff0d1.25\uff09
1\uff09127+352+73+44 \uff082\uff0989+276+135+33
\uff081\uff0925+71+75+29 +88 \uff082\uff09243+89+111+57
9405-2940\u00f728\u00d721
920-1680\u00f740\u00f77
690+47\u00d752-398
148+3328\u00f764-75
360\u00d724\u00f732+730
2100-94+48\u00d754
51+\uff082304-2042\uff09\u00d723
4215+\uff084361-716\uff09\u00f781
\uff08247+18\uff09\u00d727\u00f725
36-720\u00f7\uff08360\u00f718\uff09
1080\u00f7\uff0863-54\uff09\u00d780
\uff08528+912\uff09\u00d75-6178
8528\u00f741\u00d738-904
264+318-8280\u00f769
\uff08174+209\uff09\u00d726- 9000
814-\uff08278+322\uff09\u00f715
1406+735\u00d79\u00f745
3168-7828\u00f738+504
796-5040\u00f7\uff08630\u00f77\uff09
285+\uff083000-372\uff09\u00f736
1+5/6-19/12
3x(-9)+7x(-9
(-54)x1/6x(-1/3)
1.18.1\uff0b\uff083\uff0d0.299\u00f70.23\uff09\u00d71
2.(6.8-6.8\u00d70.55)\u00f78.5
3.0.12\u00d7 4.8\u00f70.12\u00d74.8
4.\uff083.2\u00d71.5+2.5\uff09\u00f71.6 \uff082\uff093.2\u00d7\uff081.5+2.5\uff09\u00f71.6
5.6-1.6\u00f74= 5.38+7.85-5.37=
6.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
7.6.5\u00d7\uff084.8-1.2\u00d74\uff09= 0.68\u00d71.9+0.32\u00d71.9
8.10.15-10.75\u00d70.4-5.7
9.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
10.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
11.[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5
12.5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62]
13.12\u00d76\u00f7\uff0812-7.2\uff09-6
14.12\u00d76\u00f77.2-6
15.33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
7\u00d7(5/21+9/714)
1. 81\u00f79\u00f79=
2. 54\u00f76\u00f73=
3. 38-9=
4. 41\u00f75=
5. 52-7=
6. 77-70=
7. 54+20=
8. 9\u00d73=
9. 700+1000=
10. 5080-80=
430+300
580-90
220+80
8\u00d75-20
50-26
1000-700
63+42
35+5\u00d76
720-650
670+300
260+150
63\u00f7\uff0886-79\uff09
540+400
1000-560
360-5\u00d78
45-15\u00f75
100-\uff0825+75\uff09
839-152+67
9\u00d78
27+123-250
1000-425-137
615-353-187
81\u00f79
20\u00f78
45\u00f76
35\u00f77
60\u00f77
11. 1500-800=
12. 4800-900=
13. 610-30=
14. 83-27=
15. 80+720=
16. 1400-1200=
17. 578+76=
18. 567+432=
19. 90-15=
20. 45+36=
21. 75+23=
22. 35+17=
23. 280-30=
24. 8\u00d76-9=
25. 40+600=
26. 4+7\u00d79=
27. 530+70=
28. \uff0824-16\uff09\u00d78=
29. \uff089-3\uff09\u00f73=
30. 4500-600=
31. 17+69=
32. 45-7=
33. 5005+150=
34. 2310+1270=
35. 40+600=
36. 37+26=
37. 82-49=
38. 5\u00d79+7=
39. 37+26=
40. 8\u00d74+28=
41. 100-86+34=
42. 32+25+41=
43. 26+28=
44. 73+37=
45. 97-88=
46. 7\u00d78+4=
36+48-25
\uff0834-27\uff09\u00d75
96-6\u00d78
29+42\u00f77
43+26-17
48\u00f78\u00d75
37-27\u00f79
\uff0826-19\uff09\u00d76
64\u00f7\uff0824-16\uff09
36+48-25
96-6\u00d78
\uff0834-27\uff09\u00d76
29+42\u00f77
5\u00d7\uff08100-99\uff09
345-300\u00f79
63\u00f7\uff0834-25\uff09
\uff0883-83\uff09\u00f79
43-42\u00f76
36\u00f79\u00d78
48\u00f7\uff0816\u00f72\uff09
736+3287+1797
9010-3875-2358
357+98-398
5\u00d7\uff084007-3998\uff09
\uff08345-396\uff09\u00f77
4570-\uff082390+47\uff09
280+400\u25cb280+40 3200-200\u25cb3200+200
360+90\u25cb90+360 880-90\u25cb800-90
420-300\u25cb420-30 387+595\u25cb299+399
\uff0819-10\uff09+\uff08-1235\uff09
10-10\u00f75\u00d778
\uff0836\u00f79-78\uff09\u00d74556
40-20\u00f74\u00d789
6\u00d7\uff0818-9\uff09\u00f76
4\u00d77+1 \u00d745
\uff084\u00d78+1\uff09\u00d756+\uff08-46\uff09\u00f72
825-387+659\u00d7\uff08-568\uff09
249+367\u00d778+9
1010-398
396+217\u00d756
839-152+67
1000-425-137
327+495+123
615-353-187
937-(37+16)
801-187+245
72\u00f7(300-292)
240-8\u00d75
45\u00f7(47-38)
1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)
2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)
3.8+2-8+2
4.25*4/25*4
5.7.26-(5.26-1.5)
6.286+198
7.314-202
8.526+301
9.223-99
10.6.25+3.85-2.125+3.875
11.9-2456*21
12.0.5/11.5-4*2.75
13.1/2\u00d73/5
14.3.375+5.75+2.25+6.625
15.1001\uff0d9036\u00f718
16.3.8\u00d75.25+14.5
17.2.1*4.3+5.7*2.1
18.30\u00d71/3
19.102*45-328
20.2/3\u00d712
21.2.8*3.1+17.6/8
22.3/5\u00d75/6
23.(50-12.5)/2.5
24.2/5\u00d71/3
25.6110*47+639
26.1/2-1/6
27.3.5*2.7-52.2/18
28.1/7\u00d71/5
29.3.375*0.97+0.97*6.625
30.25\u00d74/5
31.6.54+2.4+3.46+0.6
32.5/6-1/2
33.95.6*1.8+95.6*8.2
34.1/2\u00d71/5
35.600-420/12
36.344/3.6-5.4*0.25
37.16/2+30/2+90/6
38.3001-1998.
39.5000-105*34
40.0.15/0.25+0.75*1.2
41.(1/2+1/3+1/4)*0.24
42.(25+4)*4
43.300-4263/21
44.0.81/0.25+5.96
45.403\u00f713\u00d727
46.1.5\u00d74.2\uff0d0.75\u00f70.25
47.3.27\u00d74 +3.27\u00d75.7
48.\uff081.2+ 1.8\uff09\u00d74.51025\uff0d768\u00f732
49.0.25\u00d780\uff0d0.45\u00f70.9
50.1025\uff0d768\u00f732
51.0.25*2.69*4
52.2348+275*16
53.2/9*15/8-1/12*9/5
54.2.4+2.4*(5.375-3.375)
55.645-45*12
56.0.15+1.2/0.24-0.45
57.3.75-(2.35+0.25/1.25)
58.76*1/4+23*25/100+0.25
59.10-2.87-7.13
60.0.96+9.6*9.9
61.7.5-5.7*1/3
62.12.37-3.25-6.75
63.16*6.8+2.2*16+16
64.401*19+284
65.58.7-16.65/3.7
66.0.4*4.7*2.5+(2.3+5.3)
67.9.31-1.125-7.875
68.640+128*45
69.8.2*1.6-0.336/4.2
70.400*(0.62+0.08) 1\u3001\u8981\u4f7f\u5173\u4e8eX\u7684\u591a\u9879\u5f0fMX^3-2X^2+3X-4X^3+5X^2-NX\u4e0d\u542b\u4e09\u6b21\u9879\u53ca\u4e00\u6b21\u9879,\u5219M+N=?
2\u3001\u5df2\u77e5A-B=-6,\u52193-(B-A)=\u591a\u5c11\uff1f8-6A+6B=\u591a\u5c11\uff1f
3\u3001\u5982\u679c\u4e00\u4e2a\u591a\u9879\u5f0fM\u51cf\u53bb-3X+5\uff0c\u5f975X^2-3X-1\uff0c\u90a3\u4e48M\u7b49\u4e8e\u591a\u5c11\uff1f
4\u3001\u5df2\u77e5A=X^3-2X^2+1,B=3X^2-4X-3/2.\u6c42(1)3A+2B;(2)-2A-B
5\u3001\u5df2\u77e5A\u662f\u4e00\u4e2a\u591a\u9879\u5f0f,\u5728\u8ba1\u7b97A-(2X^2+5X-3)\u65f6,\u4e00\u4e2a\u540c\u5b66\u628a"A-"\u5199\u6210\u4e86"A+",\u8ba1\u7b97\u5f97\u5230\u7684\u7ed3\u679c\u662f-X^2+3X-7,\u539f\u6765\u8fd9\u4e2a\u5f0f\u5b50\u662f\u591a\u5c11?\u6b63\u786e\u7684\u7ed3\u679c\u662f\u591a\u5c11?
6\u3001\u7535\u5f71\u9662\u7684\u7b2c\u4e00\u6392\u6709A\u4e2a\u5ea7\u4f4d,\u540e\u9762\u6ca1\u4e00\u6392\u6bd4\u524d\u9762\u4e00\u6392\u591a\u4e00\u4e2a\u5ea7\u4f4d,\u7535\u5f71\u9662\u7684\u7b2cN\u6392\u6709\u591a\u5c11\u4e2a
\u7b54\u6848\uff1a
1\u3001\u9996\u5148\u8981\u77e5\u9053\u4ec0\u4e48\u662f\u4e09\u6b21\u9879\u548c\u4e00\u6b21\u9879\uff0cMX^3\u3001-4X^3\u5c31\u662f3\u6b21\u9879\uff0cNX\u30013X\u5c31\u662f\u4e00\u6b21\u9879\uff0c\u6839\u636e\u9898\u76ee\u8981\u6c42\u4e0d\u542b\u4e09\u6b21\u9879\u53ca\u4e00\u6b21\u9879\uff0c\u5219M-4=0,M=4 \uff0c3-N=0,N=3 \u5219\u6240\u4ee5M+N=7
2\u3001\uff081\uff09\u8fd9\u9898\u7684\u601d\u8def\u662f\u6539\u53d8\u8fd0\u7b97\u7b26\u53f7\uff0c3-(B-A)\u6574\u7406\u5f973-\uff08-A+B\uff09\uff0c\u518d\u6b21\u6574\u7406\u5f97\u52303+A-B\uff0c\u628a\u5df2\u77e5A-B=-6\u4ee3\u5165\uff0c\u6240\u4ee53-(B-A)=-3
\uff082\uff09\u9053\u7406\u548c\u4e0a\u4e00\u9898\u4e00\u6837\uff0c\u628a8-6A+6B\u6574\u7406\u5f97\u52308-6\uff08A-B\uff09\uff0c\u628a\u5df2\u77e5A-B=-6\u4ee3\u5165\uff0c\u6240\u4ee58-6A+6B=44
3\u3001\uff081\uff09\u8fd9\u9898\u7684\u601d\u8def\u662f\u9006\u9879\u601d\u7ef4\uff0c\u65e2\u7136\u4e00\u4e2a\u591a\u9879\u5f0fM\u51cf\u53bb-3X+5\uff0c\u5f975X^2-3X-1\uff0c\u90a3\u4e485X^2-3X-1+\uff08-3X+5\uff09=M\uff0c\u6240\u4ee5M=5X^2-6X+4
4\u3001\u8fd9\u9898\u53ea\u80fd\u786c\u7b97\uff0c\u5728\u8ba1\u7b97\u7684\u8fc7\u7a0b\u4e2d\u8bb0\u4f4f\u628a\u540c\u7c7b\u9879\u7528\u540c\u4e00\u79cd\u65b9\u5f0f\u6807\u51fa\uff0c\u53ef\u4ee5\u4fbf\u4e8e\u8fd0\u7b97\u3002
\uff081\uff093A+2B=3X^3-8X
\uff082\uff09-2A-B =-2X^3+X^2+4X-1/2
5\u3001\u8fd9\u9898\u7684\u601d\u8def\u662f\u5148\u628aA\u6c42\u51fa\uff0cA+(2X^2+5X-3)=-X^2+3X-7\uff0cA=-3X^2-2X-4\uff0c\u7136\u540e\u628aA\u4ee3\u5165A-(2X^2+5X-3)\u4e2d\u5f97\u5230-5X^2-7X-1
6\u3001\u6839\u636e\u9898\u610f\uff0c\u5e94\u5217\u51fa\u4ee5\u4e0b\u8868\u683c\uff1a
1\uff1aA
2\uff1aA+1
3\uff1aA+2
\u3002
\u3002
\u3002
N\uff1aA+N-1
\u7ed3\u679c\u662fA+N-1 1\u3001\u67d0\u5de5\u5382\u7532\u3001\u4e59\u3001\u4e19\u4e09\u4e2a\u5de5\u4eba\u6bcf\u5929\u6240\u751f\u4ea7\u7684\u673a\u5668\u96f6\u4ef6\u6570\u662f\uff1a\u7532\u548c\u4e59\u7684\u6bd4\u662f3\uff1a4\uff0c\u4e59\u548c\u4e19\u7684\u6bd4\u662f5\uff1a6\uff0c\u82e5\u4e59\u6bcf\u5929\u751f\u4ea7\u7684\u4ef6\u6570\u6bd4\u7532\u548c\u4e19\u4e24\u4eba\u7684\u548c\u5c11931\u4ef6\uff0c\u95ee\u6bcf\u4e2a\u5de5\u4eba\u6bcf\u5929\u751f\u4ea7\u591a\u5c11\u4ef6\uff1f
2\u3001\u5df2\u77e5\u521d\u4e00(1)\u4e0e\u521d\u4e00(2)\u73ed\u5404\u670944\u4eba\uff0c\u5404\u6709\u4e00\u4e9b\u5b66\u751f\u53c2\u52a0\u8bfe\u5916\u5929\u6587\u5c0f\u7ec4\uff0c(1)\u73ed\u53c2\u52a0\u5929\u6587\u5c0f\u7ec4\u7684\u4eba\u6570\u6070\u597d\u662f(2)\u73ed\u6ca1\u6709\u53c2\u52a0\u7684\u4eba\u6570\u76841/3\uff0c(2)\u73ed\u53c2\u52a0\u5929\u6587\u5c0f\u7ec4\u7684\u4eba\u6570\u662f(1)\u73ed\u6ca1\u6709\u53c2\u52a0\u7684\u4eba\u6570\u76841/4\uff0c\u95ee\u4e24\u4e2a\u73ed\u53c2\u52a0\u7684\u4eba\u6570\u5404\u662f\u591a\u5c11\uff1f
3.\u67d0\u51e0\u5173\u6709\u4e09\u4e2a\u90e8\u95e8\uff0ca\u90e8\u95e8\u670984\u4eba\uff0cb\u90e8\u95e8\u670956\u4eba\uff0cc \u90e8\u95e8\u670960\u4eba\u3002\u5982\u679c\u6bcf\u4e2a\u90e8\u95e8\u6309\u7167\u76f8\u540c\u7684\u6bd4\u4f8b\u88c1\u51cf
\u4eba\u5458\uff0c\u4f7f\u8fd9\u4e2a\u51e0\u5173\u7559\u4e0b150\u4eba\u3002\u6c42 c \u90e8\u95e8\u7559\u4e0b\u7684\u4eba\u6570\u662f\u591a\u5c11?
4.\u67d0\u8f66\u95f4\u670960\u540d\u5de5\u4eba\uff0c\u751f\u4ea7\u67d0\u79cd\u914d\u5957\u4ea7\u54c1\uff0c\u8be5\u4ea7\u54c1\u7531\u4e00\u4e2a\u87ba\u6813\u8d54\u4e24\u4e2a\u87ba\u6bcd\u800c\u6210\u3002\u6bcf\u4e2a\u5de5\u4eba\u6bcf\u5929\u5e73\u5747\u751f\u4ea7\u87ba\u681314\u4e2a\u6216\u87ba\u6bcd20\u4e2a\u3002\u5e94\u8be5\u5206\u914d\u591a\u5c11\u5de5\u4eba\u751f\u4ea7\u87ba\u6813\uff0c\u591a\u5c11\u5de5\u4eba\u751f\u4ea7\u87ba\u6bcd\uff0c\u624d\u80fd\u4f7f\u751f\u4ea7\u51fa\u7684\u87ba\u6813\u548c\u87ba\u6bcd\u521a\u597d\u914d\u5957\uff1f
\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u7684\u5e94\u7528\u6d4b\u8bd5\u9898\uff08b\u5377\uff09
\u4e00\u3001\u586b\u7a7a\u9898(\u6bcf\u5c0f\u98983\u5206\uff0c\u517118\u5206)
1\uff0e\u7532\u3001\u4e59\u4e8c\u4eba\u5728\u957f\u4e3a400\u7c73\u7684\u5706\u5f62\u8dd1\u9053\u4e0a\u8dd1\u6b65\uff0c\u5df2\u77e5\u7532\u6bcf\u79d2\u949f\u8dd19\u7c73\uff0c\u4e59\u6bcf\u79d2\u949f\u8dd17\u7c73\uff0e
(1)\u5f53\u4e24\u4eba\u540c\u65f6\u540c\u5730\u80cc\u5411\u800c\u884c\u65f6\uff0c\u7ecf\u8fc7__________\u79d2\u949f\u4e24\u4eba\u9996\u6b21\u76f8\u9047\uff1b
(2)\u4e24\u4eba\u540c\u65f6\u540c\u5730\u540c\u5411\u800c\u884c\u65f6\uff0c\u7ecf\u8fc7__________\u79d2\u949f\u4e24\u4eba\u9996\u6b21\u76f8\u9047\uff0e
2\uff0e\u4e3a\u6539\u5584\u751f\u6001\u73af\u5883\uff0c\u907f\u514d\u6c34\u571f\u6d41\u5931\uff0c\u67d0\u6751\u79ef\u6781\u690d\u6811\u9020\u6797\uff0c\u539f\u8ba1\u5212\u6bcf\u5929\u690d\u681160\u68f5\uff0c\u5b9e\u9645\u6bcf\u5929\u690d\u681180\u68f5\uff0c\u7ed3\u679c\u6bd4\u9884\u8ba1\u65f6\u95f4\u63d0\u524d4\u5929\u5b8c\u6210\u690d\u6811\u4efb\u52a1\uff0c\u5219\u8ba1\u5212\u690d\u6811__________\u68f5\uff0e
3\uff0e\u7528\u4e00\u6839\u7ef3\u5b50\u56f4\u6210\u4e00\u4e2a\u6b63\u65b9\u5f62\uff0c\u53c8\u7528\u8fd9\u6839\u7ef3\u5b50\u56f4\u6210\u4e00\u4e2a\u5706\uff0c\u5df2\u77e5\u5706\u7684\u534a\u5f84\u6bd4\u6b63\u65b9\u5f62\u7684\u8fb9\u957f\u5c112(\u03c0\uff0d2)\u7c73\uff0c\u8bf7\u95ee\u8fd9\u6839\u7ef3\u5b50\u7684\u957f\u5ea6\u662f__________\u7c73\uff0e
4\uff0e\u67d0\u79cd\u9c9c\u82b1\u8fdb\u8d27\u4ef7\u4e3a\u6bcf\u679d5\u5143\uff0c\u82e5\u6309\u6807\u4ef7\u7684\u516b\u6298\u51fa\u552e\u4ecd\u53ef\u83b7\u52293\u5143\uff0c\u95ee\u6807\u4ef7\u4e3a\u6bcf\u679d\u591a\u5c11\u5143\uff0c\u82e5\u8bbe\u6807\u4ef7\u4e3a\u6bcf\u679dx\u5143\uff0c\u5219\u53ef\u5217\u65b9\u7a0b\u4e3a__________\uff0c\u89e3\u4e4b\u5f97x=__________\uff0e
5\uff0e\u5982\u679c\u4e00\u4e2a\u4e24\u4f4d\u6570\u4e0a\u7684\u5341\u4f4d\u6570\u662f\u4e2a\u4f4d\u6570\u7684\u4e00\u534a\uff0c\u4e24\u4e2a\u6570\u4f4d\u4e0a\u7684\u6570\u5b57\u4e4b\u548c\u4e3a9\uff0c\u5219\u8fd9\u4e2a\u4e24\u4f4d\u6570\u662f__________\uff0e
6\uff0e\u4e00\u79cd\u836f\u54c1\u73b0\u5728\u552e\u4ef756\uff0e10\u5143\uff0c\u6bd4\u539f\u6765\u964d\u4f4e\u4e8615\uff05\uff0c\u95ee\u539f\u552e\u4ef7\u4e3a__________\u5143\uff0e
\u4e8c\u3001\u9009\u62e9\u9898(\u6bcf\u5c0f\u98983\u5206\uff0c\u517124\u5206)
7\uff0e\u674e\u658c\u5728\u65e5\u5386\u7684\u67d0\u5217\u4e0a\u5708\u51fa\u76f8\u90bb\u7684\u4e09\u4e2a\u6570\uff0c\u7b97\u51fa\u5b83\u4eec\u7684\u548c\uff0c\u5176\u4e2d\u80af\u5b9a\u4e0d\u5bf9\u7684\u662f
a\uff0e20 b\uff0e33 c\uff0e45 d\uff0e54
8\uff0e\u4e00\u5bb6\u4e09\u53e3\u51c6\u5907\u53c2\u52a0\u65c5\u884c\u56e2\u5916\u51fa\u65c5\u884c\uff0c\u7532\u65c5\u884c\u793e\u544a\u77e5\u201c\u5927\u4eba\u4e70\u5168\u7968\uff0c\u513f\u7ae5\u6309\u534a\u4ef7\u4f18\u60e0\u201d\uff0c\u4e59\u65c5\u884c\u793e\u544a\u77e5\u201c\u5bb6\u5ead\u65c5\u884c\u53ef\u6309\u56e2\u4f53\u8ba1\u4ef7\uff0c\u5373\u6bcf\u4eba\u5747\u6309\u5168\u7968\u76848\u6298\u4f18\u60e0\u201d\uff0c\u82e5\u8fd9\u4e24\u5bb6\u65c5\u884c\u793e\u6bcf\u4eba\u7684\u539f\u4ef7\u76f8\u540c\uff0c\u90a3\u4e48
a\uff0e\u7532\u6bd4\u4e59\u66f4\u4f18\u60e0 b\uff0e\u4e59\u6bd4\u7532\u66f4\u4f18\u60e0
c\uff0e\u7532\u4e0e\u4e59\u540c\u7b49\u4f18\u60e0 d\uff0e\u54ea\u5bb6\u66f4\u4f18\u60e0\u8981\u770b\u539f\u4ef7
9\uff0e\u98de\u673a\u9006\u98ce\u65f6\u901f\u5ea6\u4e3ax\u5343\u7c73/\u5c0f\u65f6\uff0c\u98ce\u901f\u4e3ay\u5343\u7c73/\u5c0f\u65f6\uff0c\u5219\u98de\u673a\u987a\u98ce\u65f6\u901f\u5ea6\u4e3a
a\uff0e(x+y)\u5343\u7c73/\u5c0f\u65f6 b\uff0e(x\uff0dy)\u5343\u7c73/\u5c0f\u65f6
c\uff0e(x+2y)\u5343\u7c73/\u5c0f\u65f6 d\uff0e(2x+y)\u5343\u7c73/\u5c0f\u65f6
10\uff0e\u4e00\u5217\u957fa\u7c73\u7684\u961f\u4f0d\u4ee5\u6bcf\u5206\u949f60\u7c73\u7684\u901f\u5ea6\u5411\u524d\u884c\u8fdb\uff0c\u961f\u5c3e\u4e00\u540d\u540c\u5b66\u75281\u5206\u949f\u4ece\u961f\u5c3e\u8d70\u5230\u961f\u5934\uff0c\u8fd9\u4f4d\u540c\u5b66\u8d70\u7684\u8def\u7a0b\u662f
a\uff0ea\u7c73 b\uff0e(a+60)\u7c73 c\uff0e60a\u7c73 d\uff0e \u7c73
11\uff0e\u4e00\u9879\u5de5\u7a0b\u7532\u72ec\u505a10\u5929\u5b8c\u6210\uff0c\u4e59\u7684\u5de5\u4f5c\u6548\u7387\u662f\u7532\u76842\u500d\uff0c\u4e24\u4eba\u5408\u505a\u4e86m\u5929\u672a\u5b8c\u6210\uff0c\u5269\u4e0b\u7684\u5de5\u4f5c\u91cf\u7531\u4e59\u5b8c\u6210\uff0c\u8fd8\u9700\u7684\u5929\u6570\u4e3a
a\uff0e1\uff0d\uff08 + )m b\uff0e5\uff0d m
c\uff0e m d\uff0e\u4ee5\u4e0a\u90fd\u4e0d\u5bf9
12\uff0e\u4e00\u6761\u5c71\u8def\uff0c\u67d0\u4eba\u4ece\u5c71\u4e0b\u5f80\u5c71\u9876\u8d703\u5c0f\u65f6\u8fd8\u67091\u5343\u7c73\u624d\u5230\u5c71\u9876\uff0c\u82e5\u4ece\u5c71\u9876\u8d70\u5230\u5c71\u4e0b\u53ea\u7528150\u5206\u949f\uff0c\u5df2\u77e5\u4e0b\u5c71\u901f\u5ea6\u662f\u4e0a\u5c71\u901f\u5ea6\u76841\uff0e5\u500d\uff0c\u6c42\u5c71\u4e0b\u5230\u5c71\u9876\u7684\u8def\u7a0b\uff0e\u8bbe\u4e0a\u5c71\u901f\u5ea6\u4e3ax\u5343\u7c73/\u5206\u949f\uff0c\u5219\u6240\u5217\u65b9\u7a0b\u4e3a
a\uff0ex\uff0d1=5(1\uff0e5x) b\uff0e3x+1=50(1\uff0e5x)
c\uff0e3x\uff0d1= (1\uff0e5x) d\uff0e180x+1=150(1\uff0e5x)
13\uff0e\u67d0\u5546\u54c1\u4ef7\u683ca\u5143\uff0c\u964d\u4ef710%\u540e\u53c8\u964d\u4ef710%\uff0c\u9500\u552e\u989d\u731b\u589e\uff0c\u5546\u5e97\u51b3\u5b9a\u518d\u63d0\u4ef720%\uff0c\u63d0\u4ef7\u540e\u8fd9\u79cd\u4ea7\u54c1\u4ef7\u683c\u4e3a
a\uff0ea\u5143 b\uff0e1\uff0e08a\u5143 c\uff0e0\uff0e972a\u5143 d\uff0e0\uff0e96a\u5143
14\uff0e\u300a\u4e2a\u4eba\u6240\u5f97\u7a0e\u6761\u4f8b\u300b\u89c4\u5b9a\uff0c\u516c\u6c11\u5de5\u8d44\u85aa\u6c34\u6bcf\u6708\u4e0d\u8d85\u8fc7800\u5143\u8005\u4e0d\u5fc5\u7eb3\u7a0e\uff0c\u8d85\u8fc7800\u5143\u7684\u90e8\u5206\u6309\u8d85\u8fc7\u91d1\u989d\u5206\u6bb5\u7eb3\u7a0e\uff0c\u8be6\u7ec6\u7a0e\u7387\u5982\u4e0b\u56fe\uff0c\u67d0\u4eba12\u6708\u4efd\u7eb3\u7a0e80\u5143\uff0c\u5219\u8be5\u4eba\u6708\u85aa\u4e3a
\u5168\u6708\u5e94\u7eb3\u7a0e\u91d1\u989d \u7a0e\u7387(%)
\u4e0d\u8d85\u8fc7500\u5143 5
\u8d85\u8fc7500\u5143\u52302000\u5143 10
\u8d85\u8fc72000\u5143\u81f35000\u5143 15
\u2026\u2026 \u2026\u2026
a\uff0e1900\u5143 b\uff0e1200\u5143 c\uff0e1600\u5143 d\uff0e1050\u5143
\u4e09\u3001\u7b80\u7b54\u9898(\u517158\u5206)
15\uff0e(13\u5206)\u7528\u4e00\u6839\u957f40 cm\u7684\u94c1\u4e1d\u56f4\u6210\u4e00\u4e2a\u5e73\u9762\u56fe\u5f62\uff0c(1)\u82e5\u56f4\u6210\u4e00\u4e2a\u6b63\u65b9\u5f62\uff0c\u5219\u8fb9\u957f\u4e3a__________\uff0c\u9762\u79ef\u4e3a__________\uff0c\u6b64\u65f6\u957f\u3001\u5bbd\u4e4b\u5dee\u4e3a__________\uff0e
(2)\u82e5\u56f4\u6210\u4e00\u4e2a\u957f\u65b9\u5f62\uff0c\u957f\u4e3a12 cm\uff0c\u5219\u5bbd\u4e3a______\uff0c\u9762\u79ef\u4e3a______\uff0c\u6b64\u65f6\u957f\u3001\u5bbd\u4e4b\u5dee\u4e3a____\uff0e
(3)\u82e5\u56f4\u6210\u4e00\u4e2a\u957f\u65b9\u5f62\uff0c\u5bbd\u4e3a5 cm\uff0c\u5219\u957f\u4e3a______\uff0c\u9762\u79ef\u4e3a______\uff0c\u6b64\u65f6\u957f\u3001\u5bbd\u4e4b\u5dee\u4e3a______\uff0e
(4)\u82e5\u56f4\u6210\u4e00\u4e2a\u5706\uff0c\u5219\u5706\u7684\u534a\u5f84\u4e3a________\uff0c\u9762\u79ef\u4e3a______(\u03c0\u53d63\uff0e14\uff0c\u7ed3\u679c\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570)\uff0e
(5)\u731c\u60f3\uff1a\u2460\u5728\u5468\u957f\u4e0d\u53d8\u65f6\uff0c\u5982\u679c\u56f4\u6210\u7684\u56fe\u5f62\u662f\u957f\u65b9\u5f62\uff0c\u90a3\u4e48\u5f53\u957f\u5bbd\u4e4b\u5dee\u8d8a\u6765\u8d8a\u5c0f\u65f6\uff0c\u957f\u65b9\u5f62\u7684\u9762\u79ef\u8d8a\u6765\u8d8a______(\u586b\u201c\u5927\u201d\u6216\u201c\u5c0f\u201d)\uff0c\u2461\u5728\u5468\u957f\u4e0d\u53d8\u65f6\uff0c\u6240\u56f4\u6210\u7684\u5404\u79cd\u5e73\u9762\u56fe\u5f62\u4e2d\uff0c______\u7684\u9762\u79ef\u6700\u5927\uff0e
16\uff0e(9\u5206)\u67d0\u5e02\u4e2d\u5b66\u751f\u6392\u7403\u8d5b\u4e2d\uff0c\u6309\u80dc\u4e00\u573a\u5f972\u5206\uff0c\u5e73\u4e00\u573a\u5f971\u5206\uff0c\u8d1f\u4e00\u573a\u5f970\u5206\u8ba1\u7b97\uff0c\u5e02\u7b2c\u56db\u4e2d\u5b66\u6392\u7403\u961f\u53c2\u52a0\u4e868\u573a\u6bd4\u8d5b\uff0c\u4fdd\u6301\u4e0d\u8d25\u7684\u8bb0\u5f55\uff0c\u5171\u5f97\u4e8613\u5206\uff0c\u95ee\u5176\u4e2d\u80dc\u4e86\u51e0\u573a\uff1f
17\uff0e(9\u5206)\u5c0f\u8d75\u548c\u5c0f\u738b\u4ea4\u6d41\u6691\u5047\u4e2d\u7684\u6d3b\u52a8\uff0c\u5c0f\u8d75\u8bf4\uff1a\u201c\u6211\u53c2\u52a0\u79d1\u6280\u590f\u4ee4\u8425\uff0c\u5916\u51fa\u4e00\u4e2a\u661f\u671f\uff0c\u8fd9\u4e03\u5929\u7684\u65e5\u671f\u6570\u4e4b\u548c\u662f84\uff0c\u4f60\u77e5\u9053\u6211\u662f\u51e0\u53f7\u51fa\u53bb\u7684\u5417\uff1f\u201d\u5c0f\u738b\u8bf4\uff1a\u201c\u6211\u5047\u671f\u5230\u8205\u8205\u5bb6\u53bb\u4f4f\u4e86\u4e03\u5929\uff0c\u65e5\u671f\u6570\u7684\u548c\u518d\u52a0\u6708\u4efd\u6570\u4e5f\u662f84\uff0c\u4f60\u80fd\u731c\u51fa\u6211\u662f\u51e0\u6708\u51e0\u53f7\u56de\u5bb6\u7684\uff1f\u201d\u8bd5\u8bd5\u770b\uff0c\u5217\u51fa\u65b9\u7a0b\uff0c\u89e3\u51b3\u5c0f\u8d75\u4e0e\u5c0f\u738b\u7684\u95ee\u9898\uff0e
18\uff0e(9\u5206)\u4e00\u6279\u6811\u82d7\u6309\u4e0b\u5217\u65b9\u6cd5\u4f9d\u6b21\u7531\u5404\u73ed\u9886\u53d6\uff1a\u7b2c\u4e00\u73ed\u53d6100\u68f5\u548c\u4f59\u4e0b\u7684 \uff0c\u7b2c\u4e8c\u73ed\u53d6200\u68f5\u548c\u4f59\u4e0b\u7684 \uff0c\u7b2c\u4e09\u73ed\u53d6300\u68f5\u548c\u4f59\u4e0b\u7684 \uff0c\u2026\u2026\u6700\u540e\u6811\u82d7\u5168\u90e8\u88ab\u53d6\u5b8c\uff0c\u4e14\u5404\u73ed\u7684\u6811\u82d7\u6570\u90fd\u76f8\u7b49\uff0c\u6c42\u6811\u82d7\u603b\u6570\u548c\u73ed\u7ea7\u6570\uff0e
19\uff0e(9\u5206)\u674e\u7ea2\u4e3a\u73ed\u7ea7\u8d2d\u4e70\u7b14\u8bb0\u672c\u4f5c\u665a\u4f1a\u4e0a\u7684\u5956\u54c1\uff0c\u56de\u6765\u65f6\u5411\u751f\u6d3b\u59d4\u5458\u5218\u78ca\u4ea4\u8d26\u65f6\u8bf4\uff1a\u201c\u5171\u4e70\u4e8636\u672c\uff0c\u6709\u4e24\u79cd\u89c4\u683c\uff0c\u5355\u4ef7\u5206\u522b\u4e3a1\uff0e80\u5143\u548c2\uff0e60\u5143\uff0c\u53bb\u65f6\u6211\u9886\u4e86100\u5143\uff0c\u73b0\u5728\u627e\u56de27\uff0e60\u5143\u201d\u5218\u78ca\u7b97\u4e86\u4e00\u4e0b\u8bf4\uff1a\u201c\u4f60\u4e00\u5b9a\u641e\u9519\u4e86\u201d\u674e\u7ea2\u4e00\u60f3\uff0c\u53d1\u89c9\u7684\u786e\u4e0d\u5bf9\uff0c\u56e0\u4e3a\u4ed6\u628a\u81ea\u5df1\u53e3\u888b\u91cc\u539f\u6709\u76842\u5143\u94b1\u4e00\u8d77\u5f53\u4f5c\u627e\u56de\u7684\u94b1\u6b3e\u4ea4\u7ed9\u4e86\u5218\u78ca\uff0c\u8bf7\u4f60\u7b97\u4e00\u7b97\u4e24\u79cd\u7b14\u8bb0\u672c\u5404\u4e70\u4e86\u591a\u5c11\uff1f\u60f3\u4e00\u60f3\u6709\u6ca1\u6709\u53ef\u80fd\u627e\u56de27\uff0e60\u5143\uff0c\u8bd5\u7528\u65b9\u7a0b\u7684\u77e5\u8bc6\u7ed9\u4e88\u89e3\u91ca\uff0e
20\uff0e(9\u5206)\u521d\u4e00(4)\u73ed\u8bfe\u5916\u4e52\u4e53\u7403\u5c0f\u7ec4\u4e70\u4e86\u4e24\u526f\u4e52\u4e53\u7403\u677f\uff0c\u5982\u679c\u6bcf\u4eba\u4ed89\u5143\uff0c\u90a3\u4e48\u591a\u4e865\u5143\uff0c\u5982\u679c\u6bcf\u4eba\u4ed88\u5143\uff0c\u90a3\u4e48\u8fd8\u7f3a2\u5143\uff0c\u8bf7\u4f60\u6839\u636e\u4ee5\u4e0a\u60c5\u5883\u63d0\u51fa\u95ee\u9898\uff0c\u5e76\u5217\u65b9\u7a0b\u6c42\u89e3\uff0e
\u53c2\u8003\u7b54\u6848
\u4e00\u30011\uff0e(1)25 (2)200 2\uff0e960 3\uff0e8\u03c0 4\uff0e80%x=5+3 10 5\uff0e36 6\uff0e66
\u4e8c\u30017\uff0ea 8\uff0eb 9\uff0ec 10\uff0eb 11\uff0eb 12\uff0ed 13\uff0ec 14\uff0ec
\u4e09\u300115\uff0e(1)10 100 0 (2)8 96 4 (3)15 75 10 (4)6\uff0e4 128\uff0e6 (5)\u5927 \u5706
\u56db\u300116\uff0e\u8bbe\u80dc\u4e86x\u573a\uff0c\u53ef\u5217\u65b9\u7a0b\uff1a2x+(8\uff0dx)=13\uff0c\u89e3\u4e4b\u5f97x=5
17\uff0e\u5c0f\u8d75\u662f9\u53f7\u51fa\u53bb\u7684\uff0c\u5c0f\u738b\u662f7\u670815\u53f7\u56de\u5bb6\u7684(\u63d0\u793a\uff1a\u53ef\u8bbe\u4e03\u5929\u7684\u4e2d\u95f4\u4e00\u5929\u65e5\u671f\u6570\u662fx\uff0c\u5219\u5176\u4f59\u516d\u5929\u5206\u522b\u4e3ax\uff0d3\uff0cx\uff0d2\uff0cx\uff0d1\uff0cx+1\uff0cx+2\uff0cx+3\uff0c\u7531\u9898\u610f\u5217\u65b9\u7a0b\uff0c\u6613\u6c42\u5f97\u4e2d\u95f4\u5929\u6570\uff0c\u5bf9\u5c0f\u738b\u7684\u60c5\u5f62\uff0c\u7531\u4e8e\u4e03\u5929\u7684\u65e5\u671f\u6570\u4e4b\u548c\u662f7\u7684\u500d\u6570\uff0c\u56e0\u4e3a84\u662f7\u7684\u500d\u6570\uff0c\u6240\u4ee5\u6708\u4efd\u6570\u4e5f\u662f7\u7684\u500d\u6570\uff0c\u53ef\u77e5\u6708\u4efd\u6570\u662f7\uff0c\u4e14\u57288\u53f7\u81f314\u53f7\u5728\u8205\u8205\u5bb6\uff0e\u6545\u4e8e7\u670815\u53f7\u56de\u5bb6\uff0e
18\uff0e\u6811\u82d7\u51718100\u68f5\uff0c\u67099\u4e2a\u73ed\u7ea7(\u63d0\u793a\uff1a\u672c\u9898\u7684\u8bbe\u5143\u5217\u65b9\u7a0b\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8bbe\u6811\u82d7\u603b\u6570x\u68f5\uff0c\u7531\u7b2c\u4e00\u3001\u7b2c\u4e8c\u4e24\u4e2a\u73ed\u7ea7\u7684\u6811\u82d7\u6570\u76f8\u7b49\u53ef\u5217\u65b9\u7a0b\uff1a
100+ (x\uff0d100)=200+ \u3014x\uff0d200\uff0d100\uff0d \u00b7(x\uff0d100)\u3015\uff0c\u4e5f\u53ef\u8bbe\u6709x\u4e2a\u73ed\u7ea7\uff0c\u5219\u6700\u540e\u4e00\u4e2a\u73ed\u7ea7\u53d6\u6811\u82d7100x\u68f5\uff0c\u5012\u6570\u7b2c\u4e8c\u4e2a\u73ed\u7ea7\u5148\u53d6100(x\uff0d1)\u68f5\uff0c\u53c8\u53d6\u201c\u4f59\u4e0b\u7684 \u201d\u4e5f\u662f\u6700\u540e\u4e00\u4e2a\u73ed\u7ea7\u7684\u6811\u82d7\u6570\u7684 \uff0c\u7531\u6700\u540e\u4e24\u73ed\u7684\u6811\u82d7\u76f8\u7b49\uff0c\u53ef\u5f97\u65b9\u7a0b\uff1a
100(x\uff0d1)+ x=100x\u82e5\u6ce8\u610f\u5230\u5012\u6570\u7b2c\u4e8c\u4e2a\u73ed\u7ea7\u5148\u53d6\u7684100(x\uff0d1)\u68f5\u6bd4100x\u68f5\u5c11100\u68f5\uff0c\u5373\u5f97 =100\uff0c\u8fd8\u53ef\u4ee5\u8bbe\u6bcf\u73ed\u7ea7\u53d6\u6811\u82d7x\u68f5\uff0c\u5f97 =100\uff0e
19\uff0e\u8d2d\u4e70\u5355\u4ef71\uff0e80\u5143\u7684\u7b14\u8bb0\u672c24\u672c\uff0c\u5355\u4ef72\uff0e60\u5143\u7684\u7b14\u8bb0\u672c12\u672c\uff0e\u5982\u679c\u6309\u674e\u7ea2\u539f\u6765\u62a5\u7684\u4ef7\u683c\uff0c\u90a3\u4e48\u8bbe\u8d2d\u4e70\u5355\u4ef71\uff0e80\u5143\u7684\u7b14\u8bb0\u672cx\u672c\uff0c\u5217\u65b9\u7a0b\u53ef\u5f97\uff1a1\uff0e8x+2\uff0e6\u00b7(36\uff0dx)=100\uff0d27\uff0e60\uff0c
\u89e3\u4e4b\u5f97x=2\uff0e60\u4e0d\u7b26\u5408\u5b9e\u9645\u95ee\u9898\u7684\u610f\u4e49\uff0c\u6240\u4ee5\u6ca1\u6709\u53ef\u80fd\u627e\u56de27\uff0e60\u5143\uff0e
20\uff0e\u7565
3x+y=34
2.9x+4y=35
8x+3y=30
3.7x+2y=52
7x+4y=62
4.4x+6y=54
9x+2y=87
5.2x+y=7
2x+5y=19
6.x+2y=21
3x+5y=56
7.5x+7y=52
5x+2y=22
8.5x+5y=65
7x+7y=203
9.8x+4y=56
x+4y=21
10.5x+7y=41
5x+8y=44
11.7x+5y=54
3x+4y=38
12.x+8y=15
4x+y=29
13.3x+6y=24
9x+5y=46
14.9x+2y=62
4x+3y=36
15.9x+4y=46
7x+4y=42
16.9x+7y=135
4x+y=41
17.3x+8y=51
x+6y=27
18.9x+3y=99
4x+7y=95
19.9x+2y=38
3x+6y=18
20.5x+5y=45
7x+9y=69
21.8x+2y=28
7x+8y=62
22.x+6y=14
3x+3y=27
23.7x+4y=67
2x+8y=26
24.5x+4y=52
7x+6y=74
25.7x+y=9
4x+6y=16
26.6x+6y=48
6x+3y=42
27.8x+2y=16
7x+y=11
28.4x+9y=77
8x+6y=94
29.6x+8y=68
7x+6y=66
30.2x+2y=22
7x+2y=47
x-y=2
xy=15 (x=5,y=3)
2,x+y=6
x-y=2 (4,2)
3,x+y=11,xy=30 (x=5,y=6,x=6,y=5)
4,x+y=13,xy=42 (x=6,7,y=7,6)
5,x+y=11,x-y=1 (x=6,y=5)
6,x+y=12,xy=35 (x=5,7,y=7,5)
7,x+y=5,xy=6 (x=2,3,y=3,2)
8,x-y=5,xy=36 (x=6,y=1)
9,x+y=10,xy=25 (x=y=5)
10,x+y=17,y-x=1 (x=8,y=9)
11,xy=2,x-y=1 (x=2,y=1)
12,x+y=3,xy=2 (x=1,2,y=2,1)
13,x+y=12,xy=11 (x=1,11,y=11,1)
14,x-y=8,xy=9 (x=9,y=1)
15,x+y=4,x-y=2 (x=3,y=1)
16,x+y=3,xy=0 (x=0,3,y=3,0)
17,x-y=5,xy=6 (x=6,y=1)
18,y-x=3,xy=28 (x=4,y=7)
19,y-x=2,xy=24 (x=4,y=6)
20,x+y=9,x-y=1, (x=5,y=4)
不等式：
1.已知不等式x+y<0,不加任何条件,由不等式的性质,你能推出一些什么样的不等式?(至少写出4个)
2.要比较两个数a.b的大小,有时可以通过比较a-b与0的大小来解决.
(1)如果a-b>0,则a__b.
(2)如果a-b=0,则a__b.
(3)如果a-b<0,则a__b.
(4)若x=a的平方+2007b,y=a的平方+2007b-2008,试比较x,y的大小
3.某高速公路上限速120km/h,如果用x(单位:km/h)表示车速,那么汽车在此公路上的行驶速度可以用不等式表示为___.
4.从甲地到乙地有160千米,某人以不低于40千米/时的速度由甲地到乙地,则他用的时间最多是多少?
5.写出下列不等式的解集;(1)x+1>4;(2)2x<6;(3)x-2008>0
答案：
1. x<-y y<-x 2x+2y<0 (x+y)/2<0
2.(1)如果a-b>0,则a_>_b.
(2)如果a-b=0,则a_=_b.
(3)如果a-b<0,则a_<_b.
(4)若x=a的平方+2007b,y=a的平方+2007b-2008,试比较x,y的大小
解：x-y=(a的平方+2007b)-(a的平方+2007b-2008)=2008>0
所以 x>y
3.某高速公路上限速120km/h,如果用x(单位:km/h)表示车速,那么汽车在此公路上的行驶速度可以用不等式表示为_0<=x<=120_.
4.从甲地到乙地有160千米,某人以不低于40千米/时的速度由甲地到乙地,则他用的时间最多是多少?
x>=40 1/x<=1/40 160/x<=160/40 即所用时间〈4小时
5.写出下列不等式的解集;
(1)x+1>4; x>3
(2)2x<6; x<3
(3)x-2008>0 x>2008
一元一次方程：
3X+18=52 x=34/3
4Y+11=22 y=11/4
3X*9=5 x=5/27
8Z/6=48 z=36
3X+7=59 x=52/3
4Y-69=81 y=75/4
8X*6=5 x=5/48
7Z/9=4 y=63/7
15X+8-5X=54 x=4.6
5Y*5=27 y=27/40
8x+2=10 x=1
x*8=88 x=11
y-90=1 y=91
绛旓細1.2x+9y=81 3x+y=34 2.9x+4y=35 8x+3y=30 3.7x+2y=52 7x+4y=62 4.4x+6y=54 9x+2y=87 5.2x+y=7 2x+5y=19 6.x+2y=21 3x+5y=56 7.5x+7y=52 5x+2y=22 8.5x+5y=65 7x+7y=203 9.8x+4y=56 x+4y=21 10.5x+7y=41 5x+8y=44 11.7x+5y=54 3x+4y=38 12.x+...
绛旓細锛5锛夛紙-7.34锛+锛-12.74锛+7.34+12.4绛旀涓猴細-0.34姹傝繃绋 =-7.34-12.74+7.34+12.4 =7.34-7.34-12.74+12.4 =-12.74+12.4 =-0.34 锛6锛夛紙-2鍙1/3锛+锛+3鍙1/2锛+锛-2鍙2/3锛+6鍙1/2+锛-5鍙3/4锛夌瓟妗堜负锛-3/4姹傝繃绋 =锛-2鍙1/3锛+锛+3鍙1/2锛+...
绛旓細鍒欏叾浣欏叚澶╁垎鍒负x-3,x-2,x-1,x+1,x+2,x+3,鐢遍鎰忓垪鏂圭▼,鏄撴眰寰椾腑闂村ぉ鏁,瀵瑰皬鐜嬬殑鎯呭舰,鐢变簬涓冨ぉ鐨勬棩鏈熸暟涔嬪拰鏄7鐨勫嶆暟,鍥犱负84鏄7鐨勫嶆暟,鎵浠ユ湀浠芥暟涔熸槸7鐨勫嶆暟,鍙煡鏈堜唤鏁版槸7,涓斿湪8鍙疯嚦14鍙峰湪鑸呰垍瀹.鏁呬簬7鏈15鍙峰洖瀹.
绛旓細鏅璁＄畻棰锛氣憼1锛5脳锕6脳锛6锕氾紜2锛5 鈶2锛58脳3锛2锛嬶箼锕6锕氣憿10脳锛5锛2锛69锛嬶箼锕25锕氣懀3锛2锛嶏箼锕2锕毭9锛6 鈶360锕2586梅2锛嬶箼锛6664锕氫竴鍏冧竴娆℃柟绋 鈶3y锛69y锛2梅3锛69 鈶4y涓锕欙紞6锕氾紜8锛10 鈶9y锛6锛9锛65 鈶60y锛58锛60锛2 鈶4y锛50锛嬶箼锕6锕氾紳锛60 鍖栫畝...
绛旓細3X+18=52 x=34/3 4Y+11=22 y=11/4 3X*9=5 x=5/27 8Z/6=48 z=36 3X+7=59 x=52/3 4Y-69=81 y=75/4 8X*6=5 x=5/48 7Z/9=4 y=63/7 15X+8-5X=54 x=4.6 5Y*5=27 y=27/40 8x+2=10 x=1 x*8=88 x=11 y-90=1 y=91 2x-98=2 x=50 6x*6=12 x=...
绛旓細2x+5=10 3x-15=75 4x+4o=320 3x+77=122 5x-1.6=0.6 6x-4=20 10x-0.6=2.4 500-12x=140 1) 66x+17y=3967 25x+y=1200 绛旀锛歺=48 y=47 (2) 18x+23y=2303 74x-y=1998 绛旀锛歺=27 y=79 (3) 44x+90y=7796 44x+y=3476 绛旀锛歺=79 y=48 (4) 76x-66y=4082 ...
绛旓細2.璁＄畻: (1)-32- (2){1+[ ]脳(-2)4}梅(- ); (3)5-3脳{-2+4脳[-3脳(-2)2-(-4) 梅(-1)3]-7}. 銆愮敓娲诲疄闄呰繍鐢ㄣ 鐢茬敤1000鍏冧汉姘戝竵璐拱浜嗕竴鎵嬭偂绁,闅忓嵆浠栧皢杩欐墜鑲＄エ杞崠缁欎箼,鑾峰埄10%,鑰屽悗涔欏張灏嗚繖鎵嬭偂绁ㄥ弽鍗栫粰鐢,浣嗕箼鎹熷け浜10%.鏈鍚庣敳鎸変箼鍗栫粰鐢茬殑浠锋牸鐨勪節鎶樺皢杩欐墜鑲＄エ鍗栫粰浜嗕箼...
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绛旓細2012-01-12 鍒濅竴涓婃暟瀛璁＄畻棰,甯﹁繃绋,甯︾瓟妗(100閬,灏介噺澶) 90 2014-11-27 鍒濅竴涓婂唽鏁板100閬撹绠楅(甯︾瓟妗) 85 2012-09-14 鍒濅竴骞寸骇涓嬪唽鏁板璁＄畻棰100閬撱傚甫绛旀鍜岃繃绋 (鍙鏁板璁＄畻... 319 2010-07-20 姹100閬撳垵涓鏁板璁＄畻棰(闄勭瓟妗) 129 2013-07-17 鍒濅竴涓鍏冧竴娆℃柟绋嬪垎鏁拌绠楅100閬,甯︾瓟...
绛旓細渚6 鑻b=1,姹 鐨勫 鍒嗘瀽 姝ら鐨勮В娉曞緢澶,鍏抽敭鏄浣曞厖鍒嗗埄鐢ㄥソab=1,濡傜敱ab=1寰楀嚭 ,鐒跺悗鐩存帴浠ｅ叆璁＄畻锛涘鍒╃敤ab=1宸х鍦板皢寮忓瓙涓殑鈥1鈥濅唬鎹㈡垚ab锛涘鍦ㄥ紡瀛愮殑涓涓垎寮忕殑鍒嗗瓙銆佸垎姣嶄笂涔樹互a鎴朾,鐒跺悗鍖栨垚鍚屽垎姣嶈繘琛岃绠.瑙ｆ硶1 鐢盿b=1寰 ,浠庤 = 瑙ｆ硶2 鈭礱b=1,鈭 = 瑙ｆ硶3 鈭礱b=1,鈭 ...
