求初一计算题！！！ 求大量初一计算题！
\u6c42300\u9053\u521d\u4e00\u8ba1\u7b97\u9898\u5566\uff01\uff01\uff01\u62dc\u6258\u4e86\u2026\u20261.(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
\u6216\u8005\u76f4\u63a5\u53bb\u8fd9\u91cc\uff1a
http://wenku.baidu.com/view/6138f6c75fbfc77da269b1d3
\u4e00\u3001\u6709\u7406\u6570\u8ba1\u7b97
(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) 15*(-1)/12+7
(42) (-13)+(-16)+(-14)-(-6)
(43) 14*12*(-20)*(-13)
(44) 17-9-20+(-10)
(45) 12/(-14)+(-14)+(-2)
(46) (-15)-12/(-17)-(-3)
(47) 6-3/9/(-8)
(48) (-20)*(-15)*10*(-4)
(49) 7/(-2)*(-3)/(-14)
(50) 13/2*18*(-7)
(51) 13*5+6+3
(52) (-15)/5/3+(-20)
(53) 19*4+17-4
(54) (-11)-(-6)*(-4)*(-9)
(55) (-16)+16-(-8)*(-13)
(56) 16/(-1)/(-10)/(-20)
(57) (-1)-(-9)-9/(-19)
(58) 13*20*(-13)*4
(59) 11*(-6)-3+18
(60) (-20)+(-12)+(-1)+(-12)
(61) (-19)-3*(-13)*4
(62) (-13)/3-5*8
(63) (-15)/1+17*(-18)
(64) (-13)/3/19/8
(65) (-3)/(-13)/20*5
(66) 3/12/(-18)-18
(67) 5*(-19)/13+(-6)
(68) 4+4*(-19)-11
(69) (-2)+17-5+(-1)
(70) 9+(-3)*19*(-19)
\u7b54\u6848\uff1a
1 -18
2 103/6
3 -37
4 9
5 -43
6 -(20/3)
7 -(199/9)
8 54/7
9 17
10 2
11 -83
12 216
13 1021/91
14 27/7
15 -1741
16 73
17 127
18 -(2885/12)
19 842
20 5
21 214
22 -41
23 -(13/28)
24 -(51/10)
25 24
26 -(268/39)
27 39/5
28 -(372/19)
29 15/11
30 -(77/19)
31 -(29/2)
32 1716/17
33 -(117/4)
34 -17
35 25
36 2856
37 59/2
38 184
39 -(731/4)
40 587/3
41 23/4
42 -37
43 43680
44 -22
45 -(118/7)
46 -(192/17)
47 145/24
48 -12000
49 -(3/4)
50 -819
51 74
52 -21
53 89
54 205
55 -104
56 -(2/25)
57 161/19
58 -13520
59 -51
60 -45
61 137
62 -(133/3)
63 -321
64 -(13/456)
65 3/52
66 -(1297/72)
67 -(173/13)
68 -83
69 9
70 1092
\u4e8c\u3001\u6574\u5f0f\u52a0\u51cf85\u3001(\uff0d3ab)2\u00b7\uff08\uff0d2ab2\uff09\uff1b 86\u3001x(x\uff0dy)+x(y\uff0dx)\uff1b
87\u3001(x+2)(x+3)\uff1b 88\u3001(x\uff0d2)(x+3)\uff1b
89\u3001(x+2)(x\uff0d3)\uff1b 90\u3001(x\uff0d2)(x\uff0d3)\uff1b
91\u3001(3a\uff0d4b)(2a\uff0d5b) 92\u3001(x+2y)(x\uff0d2y)
93\u3001(5x\uff0d4y)(2x\uff0d3y) 94\u3001(3x+4y)(3x\uff0d4y)
95\u3001(2a\uff0d3b)(3a+2b) 96\u3001(2m+5m)(6n\uff0d3m)
97\u3001(3x\uff0dy)(3x\uff0dy) 98\u3001(6x\uff0dy)(6x+y)
99\u3001(2x+y)(\uff0d2x\uff0dy) 100\u3001(x\uff0d5)(x+5)\uff1b
101\u3001(3y\uff0d10)(3y+10)\uff1b 102\u3001\uff08 \uff0d5b\uff09( +5b)\uff1b
103\u3001(xy3)(xy 104\u3001(x\uff0d5)(x+5)\uff1b
105\u3001(3y\uff0d10)(3y+10)\uff1b 106\u3001\uff08 \uff0d5b\uff09( +5b)\uff1b
107\u3001(xy\uff0d3)(xy+3)\uff1b 108\u3001(a\uff0dbc)(a+bc)\uff1b
109\u3001(a+2b)(2b\uff0da)\uff1b 110\u3001 (3x\uff0dy)(y+3x)\uff1b
111\u30014x2\uff0d(2x\uff0d9)(2x+9)\uff1b 112\u3001\uff08\uff0d7m+1\uff09(\uff0d7m\uff0d1)\uff1b
113\u3001(\uff0dx\uff0d5)(\uff0dx+5)\uff1b 114\u3001(x2\uff0d2)(x2+2)\uff1b
115\u3001(ab\uff0d3)(ab+3)\uff1b 116\u3001(4y\uff0d3x)(3x+4y)\uff1b
117\u3001(x+1)(x\uff0d1)\uff0dx2\uff1b 118\u3001(3y\uff0d1)(3y+1)\uff0d(2y+2)(2y\uff0d2)\uff1b
练习一(B级)
(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)
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)
还有的另一张卷子上是
－38）＋52＋118＋（－62）＝
（－32）＋68＋（－29）＋（－68）＝
（－21）＋251＋21＋（－151）＝
12＋35＋（－23）＋0＝
利用有理数的加法解下面2题
(1)王老伯上街时带有现金550元,购物用去260元,又去银行取款150元,现在王老伯身上还有多少现金?
(2)潜水艇原停在海面下800米处,先浮上150米,又下潜200米,这时潜水艇在海面下多少米处?
（-6）+8+（-4）+12
3又1/4+（-2又3/5）+5又3/4+（-8又2/5）
9+（-7）+10+（-3）+（-9）
27+（-26）+33+（-27）
（+4又5/8）+（-3.257）+（-4.625)
23+（-17）+6+（-22）
-2+3+1+（-3）+2+（-4）
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
有理数的加减混合运算
【【同步达纲练习】
1．选择题：
（1）把-2-（+3）-（-5）+（-4）+（+3）写成省略括号和的形式，正确的是（ ）
A．-2-3-5-4+3 B．-2+3+5-4+3
C．-2-3+5-4+3 D．-2-3-5+4+3
（2）计算（-5）-（+3）+（-9）-（-7）+ 所得结果正确的是（ ）
A．-10 B．-9 C．8 D．-23
（3）-7，-12，+2的代数和比它们的绝对值的和小（ ）
A．-38 B．-4 C．4 D．38
（4）若 +（b+3）2=0,则b-a- 的值是（ ）
A．-4 B．-2 C．-1 D．1
（5）下列说法正确的是（ ）
A．两个负数相减，等于绝对值相减
B．两个负数的差一定大于零
C．正数减去负数，实际是两个正数的代数和
D．负数减去正数，等于负数加上正数的绝对值
（6）算式-3-5不能读作（ ）
A．-3与5的差 B．-3与-5的和
C．-3与-5的差 D．-3减去5
2．填空题：（4′×4=16′）
（1）-4+7-9=- - + ；
（2）6-11+4+2=- + - + ；
（3）（-5）+（+8）-（+2）-（-3）= + - + ；
（4）5-（-3 ）-（+7）-2 =5+ - - + - .
3．把下列各式写成省略括号的和的形式，并说出它们的两种读法：（8′×2=16′）
（1）（-21）+（+16）-（-13）-（+7）+（-6）；
（2）-2 -（- ）+（-0.5）+(+2)-(+ )-2.
4.计算题(6′×4=24′)
(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.当x=-3.7,y=-1.8,z=-1.5时,求下列代数式的值(5′×4=20′)
(1)x+y-z; (2)-x-y+z; (3)-x+y+z; (4)x-y-z.
【素质优化训练】
(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.当x= ,y=- ,z=- 时,分别求出下列代数式的值;
(1)x-(-y)+(-z); (2)x+(-y)-(+z);
(3)-(-x)-y+z; (4)-x-(-y)+z.
3.就下列给的三组数,验证等式：
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 .
4.计算题
(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
【生活实际运用】
某水利勘察队,第一天向上游走5 千米,第二天又向上游走5 ,第三天向下游走4 千米,第四天又向下游走4.5千米,这时勘察队在出发点的哪里?相距多少千米?
参考答案：
【同步达纲练习】
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.略4.(1)-4; (2)-80; (3)-30.5 (4)-5
5.(1)-4; (2)4; (3)0.4; (4)-0.4.
【素质优化训练】
1.(1)-,+,+; (2)-,+,-,-; (3)+,+; (4)-,+,+; (5)-,+,-,-.
2.(1) (2) (3) (4)-
3.(1) (2)都成立.
4.(1)-
(2)
(3)-29.5
(4)-1 第(4)题注意同号的数、互为相反数先分别结合。
【生活实际运用】
1．上游1 千米
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)
(二)用简便方法计算:
(1)(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(三)已知:X=+17(3/4),Y=-9(5/11),Z=-2.25,
求:(-X)+(-Y)+Z的值
(四)用">","0,则a-ba (C)若ba (D)若a<0,ba
（五）1+3+5+7......+2005+2007
=(1+2007)+(3+2005)+……
这些括号里都是2008，所以最后一个括号也是2008，而且是最接近的两个奇数
2008/2=1004，所以最后一个括号是1003+1005
所以1+3+5+7......+2005+2007
=(1+2007)+(3+2005)+……(1003+1005)
再看有几个括号
括号左边是1，3，5，7，9，……，1003
则1是第一个奇数，所以2*1-1=1
3是第二个奇数，所以2*2-1=3
5是第三个奇数，所以2*3-1=5
7是第四个奇数，所以2*4-1=7
所以第n个奇数是2n-1
2n-1=1003,n=502
所以1003是第502个奇数
所以一共有502个括号，每个括号都等于2008
所以原式=502*2008=1008016
请采纳！！！！！！！！！！！！！！！
1+2+45564+55526+552558+25595215*454565-55656=?
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绛旓細瑙ｆ柟绋 1)87x+2y=7733 20x+32y=4364 绛旀锛歺=87 y=82 2)44x+60y=6340 15x+42y=4122 绛旀锛歺=20 y=91 3)11x+74y=3548 71x+45y=4730 绛旀锛歺=40 y=42 4)53x+54y=3229 70x+43y=2877 绛旀锛歺=11 y=49 5)43x+9y=801 76x+16y=1420 绛旀锛歺=9 y=46 6)55x+32y=6161...
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 闅剧偣浜嗚В 鍒濅腑鐨勬椂鍊欎竴鑸璁＄畻鑳藉姏瑕...
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绛旓細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=1/3 5-6=5x x=-1...
绛旓細绛旀锛歺=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 30x-y=2940 绛旀锛歺=98 y=51 (5) 67x+54y=8546 71x-y=5680 绛旀锛歺=80 y=59 (6) 42x-95y=-1410 21x-y=1575 绛旀锛歺=75 y...
绛旓細5銆3.75+(2.25)+5/4 6銆-3.75+(+5/4)+(-1.5)7銆侊紙17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)8銆4.6-(-3/4+1.6-4-3/4)9銆1/2+3+5/6-7/12 10銆乕2/3-4-1/4*(-0.4)]/1/3+2 11銆22+(-4)+...
绛旓細4 30x-10(10-x)=100 x=5 5 4(x+2)=5(x-2) x=18 6 120-4(x+5)=25 x=18.75 7 15x+863-65x=54 x=16.18 8 3(x-2)+1=x-(2x-1) x=3/2 9 11x+64-2x=100-9x x=2 10 (5y+1)+ (1-y)= (9y+1)+ (1-3y);11 20%+(...
绛旓細0.8x-4.2=2.2 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 (...
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