数学初二实数计算题及答案（一百道） 初二上学期数学计算题150道 要有过程的和答案
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\u9009\u62e9\u9898
1\uff0e\u5df2\u77e5(x+y)\u2236(x-y)=3\u22361\uff0c\u5219x\u2236y=\uff08 \uff09\u3002
A\u30013\u22361 B\u30012\u22361 C\u30011\u22361 D\u30011\u22362
2\uff0e\u65b9\u7a0b-2x+ m=-3\u7684\u89e3\u662f3\uff0c\u5219m\u7684\u503c\u4e3a\uff08 \uff09\u3002
A\u30016 B\u3001-6 C\u3001 D\u3001-18
3\uff0e\u5728\u65b9\u7a0b6x+1=1\uff0c2x= \uff0c7x-1=x-1\uff0c5x=2-x\u4e2d\u89e3\u4e3a \u7684\u65b9\u7a0b\u4e2a\u6570\u662f\uff08 \uff09\u3002
A\u30011\u4e2a B\u30012\u4e2a C\u30013\u4e2a D\u30014\u4e2a
4\uff0e\u6839\u636e\u201ca\u76843\u500d\u4e0e-4\u7edd\u5bf9\u503c\u7684\u5dee\u7b49\u4e8e9\u201d\u7684\u6570\u91cf\u5173\u7cfb\u53ef\u5f97\u65b9\u7a0b\uff08 \uff09\u3002
A\u3001|3a-(-4)|=9 B\u3001|3a-4|=9
C\u30013|a|-|-4|=9 D\u30013a-|-4|=9
5\uff0e\u82e5\u5173\u4e8ex\u7684\u65b9\u7a0b =4(x-1)\u7684\u89e3\u4e3ax=3\uff0c\u5219a\u7684\u503c\u4e3a\uff08 \uff09\u3002
A\u30012 B\u300122 C\u300110 D\u3001-2
\u7b54\u6848\u4e0e\u89e3\u6790
\u7b54\u6848\uff1a1\u3001B 2\u3001A 3\u3001B 4\u3001D 5\u3001C
\u89e3\u6790\uff1a
1\uff0e\u5206\u6790\uff1a\u672c\u9898\u8003\u67e5\u5bf9\u7b49\u5f0f\u8fdb\u884c\u6052\u7b49\u53d8\u5f62\u3002
\u7531(x+y)\u2236(x-y)=3\u22361\uff0c\u77e5x+y=3(x-y)\uff0c\u5316\u7b80\u5f97\uff1ax+y=3x-3y\uff0c
\u5f972x-4y=0\uff0c\u5373x=2y\uff0cx\u2236y=2\u22361\u3002
2\uff0e\u5206\u6790\uff1a\u2235 3\u662f\u65b9\u7a0b-2x+ m=-3\u7684\u89e3\uff0c
\u2234 -2\u00d73+ m=-3\uff0c
\u5373\uff0d6+ m=-3\uff0c
\u2234 m=-3+6\uff0c\u2014\u2014\u6839\u636e\u7b49\u5f0f\u7684\u57fa\u672c\u6027\u8d281
\u2234 m=6\uff0c\u2014\u2014\u6839\u636e\u7b49\u5f0f\u7684\u57fa\u672c\u6027\u8d282
\u2234 \u9009A\u3002
3\uff0e\u5206\u6790\uff1a6x+1=1\u7684\u89e3\u662f0\uff0c2x= \u7684\u89e3\u662f \uff0c7x-1=x-1\u7684\u89e3\u662f0\uff0c5x=2-x\u7684\u89e3\u662f \u3002
4\uff0e\u7565\u3002
5\uff0e\u5206\u6790\uff1a\u56e0\u4e3ax=3\u662f\u65b9\u7a0b =4(x-1)\u7684\u89e3\uff0c\u6545\u5c06x=3\u4ee3\u5165\u65b9\u7a0b\u6ee1\u8db3\u7b49\u5f0f\u3002
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20\u5343\u514b 20\u5343\u514b\u4ee5\u4e0a
\u4f46\u4e0d\u8d85\u8fc740\u5343\u514b 40\u5343\u514b\u4ee5\u4e0a
\u6bcf\u5343\u514b\u4ef7\u683c 6\u5143 5\u5143 4\u5143
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6x\uff0b5\uff0850\uff0dx\uff09\uff1d264
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50\uff0d14\uff1d36\uff08\u5343\u514b\uff09
2\uff09\u5f53\u7b2c\u4e00\u6b21\u8d2d\u4e70\u9999\u8549\u5c11\u4e8e20\u5343\u514b\uff0c\u7b2c\u4e8c\u6b21\u9999\u8549\u8d85\u8fc740\u5343\u514b\u7684\u65f6\u5019\uff0c\u8bbe\u7b2c\u4e00\u6b21\u8d2d\u4e70x\u5343\u514b\u9999\u8549\uff0c\u7b2c\u4e8c\u6b21\u8d2d\u4e70\uff0850\uff0dx\uff09\u5343\u514b\u9999\u8549\uff0c\u6839\u636e\u9898\u610f\uff0c\u5f97\uff1a
6x\uff0b4\uff0850\uff0dx\uff09\uff1d264
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\u4f4f\u9662\u533b\u7597\u8d39\uff08\u5143\uff09 \u62a5\u9500\u7387\uff08%\uff09
\u4e0d\u8d85\u8fc7500\u5143\u7684\u90e8\u5206 0
\u8d85\u8fc7500\uff5e1000\u5143\u7684\u90e8\u5206 60
\u8d85\u8fc71000\uff5e3000\u5143\u7684\u90e8\u5206 80
\u2026\u2026
A\u30011000\u5143 B\u30011250\u5143 C\u30011500\u5143 D\u30012000\u5143
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500\u00d760\uff05\uff0b(x\uff0d1000)80%\uff1d1100
\u89e3\u5f97\uff1ax\uff1d2000
\u6240\u4ee5\u672c\u9898\u7b54\u6848D\u3002
\u4e09\u3001 \u65b9\u6848\u578b
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\u5206\u6790\uff1a\u672c\u9898\u8868\u793a\u521d\u4e09\u5e74\u7ea7\u603b\u4eba\u6570\u6709\u4e24\u79cd\u65b9\u6848\uff0c\u752830\u5ea7\u5ba2\u8f66\u7684\u8f86\u6570\u8868\u793a\u603b\u4eba\u6570\uff1a30x+15
\u752840\u5ea7\u5ba2\u8f66\u7684\u8f86\u6570\u8868\u793a\u603b\u4eba\u6570\uff1a40\uff08x\uff0d2\uff09+35\u3002
\u89e3\uff1a\uff081\uff09\u8be5\u6821\u521d\u4e09\u5e74\u7ea7\u5b66\u751f\u7684\u603b\u4eba\u6570\u4e3a\uff1a30x+15
\uff082\uff09\u7531\u9898\u610f\u5f97\uff1a
30x+15\uff1d40\uff08x\uff0d2\uff09+35
\u89e3\u5f97\uff1ax\uff1d6
30x\uff0b15\uff1d30\u00d76\uff0b15\uff1d195\uff08\u4eba\uff09
\u7b54\uff1a\u521d\u4e09\u5e74\u7ea7\u603b\u5171195\u4eba\u3002
\u56db\u3001 \u6570\u636e\u5904\u7406\u578b
\u6570\u636e\u5904\u7406\u578b\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u89e3\u5e94\u7528\u9898\u5f80\u5f80\u4e0d\u76f4\u63a5\u544a\u8bc9\u6211\u4eec\u4e00\u4e9b\u6761\u4ef6\uff0c\u9700\u8981\u6211\u4eec\u5bf9\u6240\u7ed9\u7684\u6570\u636e\u8fdb\u884c\u5206\u6790\uff0c\u83b7\u53d6\u6211\u4eec\u6240\u9700\u7684\u6570\u636e\u3002
\u4f8b\u4e94\uff1a(2004\u5e74\u5317\u4eac\u6d77\u6dc0\u533a)\u89e3\u5e94\u7528\u9898\uff1a2004\u5e744\u6708\u6211\u56fd\u94c1\u8def\u7b2c5\u6b21\u5927\u63d0\u901f\uff0e\u5047\u8bbeK120\u6b21\u7a7a\u8c03\u5feb\u901f\u5217\u8f66\u7684\u5e73\u5747\u901f\u5ea6\u63d0\u901f\u540e\u6bd4\u63d0\u901f\u524d\u63d0\u9ad8\u4e8644\u5343\u7c73\uff0f\u65f6\uff0c\u63d0\u901f\u524d\u7684\u5217\u8f66\u65f6\u523b\u8868\u5982\u4e0b\u8868\u6240\u793a\uff1a
\u884c\u9a76\u533a\u95f4 \u8f66\u6b21 \u8d77\u59cb\u65f6\u523b \u5230\u7ad9\u65f6\u523b \u5386\u65f6 \u5168\u7a0b\u91cc\u7a0b
A\u5730\u2014B\u5730 K120 2\uff1a00 6\uff1a00 4\u5c0f\u65f6 264\u5343\u7c73
\u8bf7\u4f60\u6839\u636e\u9898\u76ee\u63d0\u4f9b\u7684\u4fe1\u606f\u586b\u5199\u63d0\u901f\u540e\u7684\u5217\u8f66\u65f6\u523b\u8868\uff0c\u5e76\u5199\u51fa\u8ba1\u7b97\u8fc7\u7a0b\uff0e
\u884c\u9a76\u533a\u95f4 \u8f66\u6b21 \u8d77\u59cb\u65f6\u523b \u5230\u7ad9\u65f6\u523b \u5386\u65f6 \u5168\u7a0b\u91cc\u7a0b
A\u5730\u2014B\u5730 K120 2\uff1a00 264\u5343\u7c73
\u89e3\uff1a
\u884c\u9a76\u533a\u95f4 \u8f66\u6b21 \u8d77\u59cb\u65f6\u523b \u5230\u7ad9\u65f6\u523b \u5386\u65f6 \u5168\u7a0b\u91cc\u7a0b
A\u5730\u2014B\u5730 K120 2\uff1a00 4\uff1a24 2.4\u5c0f\u65f6 264\u5343\u7c73
\u5206\u6790\uff1a\u901a\u8fc7\u8868\u4e00\u6211\u4eec\u53ef\u4ee5\u5f97\u77e5\u63d0\u901f\u524d\u7684\u706b\u8f66\u901f\u5ea6\u4e3a264\u00f74\uff1d66\u5343\u7c73\uff0f\u65f6\uff0c\u4ece\u800c\u5f97\u51fa\u63d0\u901f\u540e\u7684\u901f\u5ea6\uff0c\u518d\u6839\u636e\u8868\u4e8c\u5df2\u7ecf\u7ed9\u7684\u6570\u636e\uff0c\u7b97\u51fa\u8981\u6c42\u7684\u503c\u3002
\u89e3\uff1a\u8bbe\u5217\u8f66\u63d0\u901f\u540e\u884c\u9a76\u65f6\u95f4\u4e3ax\u5c0f\u65f6. \u6839\u636e\u9898\u610f\uff0c\u5f97
\u7ecf\u68c0\u9a8c\uff0cx=2.4\u7b26\u5408\u9898\u610f\uff0e
\u7b54\uff1a\u5230\u7ad9\u65f6\u523b\u4e3a4:24\uff0c\u5386\u65f62.4\u5c0f\u65f6
\u4f8b\u516d\uff1a\uff082005\u6d59\u6c5f\u7701\uff09\u636e\u4e86\u89e3\uff0c\u706b\u8f66\u7968\u4ef7\u6309\u201c \u201d\u7684\u65b9\u6cd5\u6765\u786e\u5b9a\uff0e\u5df2\u77e5A\u7ad9\u81f3H\u7ad9\u603b\u91cc\u7a0b\u6570\u4e3a1 500\u5343\u7c73\uff0c\u5168\u7a0b\u53c2\u8003\u4ef7\u4e3a180\u5143\uff0e\u4e0b\u8868\u662f\u6cbf\u9014\u5404\u7ad9\u81f3H\u7ad9\u7684\u91cc\u7a0b\u6570\uff1a
\u8f66\u7ad9\u540d A B C D E F G H
\u5404\u7ad9\u81f3H\u7ad9\u7684\u91cc\u7a0b\u6570\uff08\u5355\u4f4d\uff1a\u5343\u7c73\uff09 1500 1130 910 622 402 219 72 0
\u4f8b\u5982\uff0c\u8981\u786e\u5b9a\u4eceB\u7ad9\u81f3E\u7ad9\u706b\u8f66\u7968\u4ef7\uff0c\u5176\u7968\u4ef7\u4e3a (\u5143)\uff0e
(1) \u6c42A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7(\u7ed3\u679c\u7cbe\u786e\u52301\u5143)\uff1b
(2) \u65c5\u5ba2\u738b\u5927\u5988\u4e58\u706b\u8f66\u53bb\u5973\u513f\u5bb6\uff0c\u4e0a\u8f66\u8fc7\u4e24\u7ad9\u540e\u62ff\u7740\u706b\u8f66\u7968\u95ee\u4e58\u52a1\u5458\uff1a\u6211\u5feb\u5230\u7ad9\u4e86\u5417\uff1f\u4e58\u52a1\u5458\u770b\u5230\u738b\u5927\u5988\u624b\u4e2d\u7968\u4ef7\u662f66\u5143\uff0c\u9a6c\u4e0a\u8bf4\u4e0b\u4e00\u7ad9\u5c31\u5230\u4e86\uff0e\u8bf7\u95ee\u738b\u5927\u5988\u662f\u5728\u54ea\u4e00\u7ad9\u4e0b\u8f66\u7684\uff1f\uff08\u8981\u6c42\u5199\u51fa\u89e3\u7b54\u8fc7\u7a0b\uff09\uff0e
\u89e3\uff1a (1) \u89e3\u6cd5\u4e00\uff1a\u7531\u5df2\u77e5\u53ef\u5f97 \uff0e
A\u7ad9\u81f3F\u7ad9\u5b9e\u9645\u91cc\u7a0b\u6570\u4e3a1500\uff0d219=1281\uff0e
\u6240\u4ee5A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7\u4e3a 0.12 1281=153.72 154(\u5143)
\u89e3\u6cd5\u4e8c\uff1a\u7531\u5df2\u77e5\u53ef\u5f97A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7\u4e3a (\u5143)\uff0e
(2)\u8bbe\u738b\u5927\u5988\u5b9e\u9645\u4e58\u8f66\u91cc\u7a0b\u6570\u4e3ax\u5343\u7c73\uff0c\u6839\u636e\u9898\u610f\uff0c\u5f97\uff1a \uff0e
\u89e3\u5f97 x= (\u5343\u7c73)\uff0e
\u5bf9\u7167\u8868\u683c\u53ef\u77e5\uff0c D\u7ad9\u4e0eG\u7ad9\u8ddd\u79bb\u4e3a550\u5343\u7c73\uff0c\u6240\u4ee5\u738b\u5927\u5988\u662fD\u7ad9\u6216G\u7ad9\u4e0b\u7684\u8f66\uff0e
\u4ee3\u6570\u7b2c\u516d\u7ae0\u80fd\u529b\u81ea\u6d4b\u9898
\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u548c\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u7ec4
\u521d\u4e2d\u6570\u5b66\u7f51\u7ad9http://emath.126.com
\u5206\u5f0f\u65b9\u7a0b
\uff08\u4e00\uff09\u586b\u7a7a
\u5173\u4e8ey\u7684\u65b9\u7a0b\u662f_____\uff0e
\uff08\u4e8c\uff09\u9009\u62e9
A\uff0ex=-3\uff1b B\uff0ex\u2260-3\uff1b
C\uff0e\u4e00\u5207\u5b9e\u6570\uff1b D\uff0e\u65e0\u89e3\uff0e
C\uff0e\u65e0\u89e3\uff1b D\uff0e\u4e00\u5207\u5b9e\u6570\uff0e
A\uff0ex=0\uff1b B\uff0ex=0\uff0cx=1\uff1b
C\uff0ex=0\uff0cx=-1\uff1b D\uff0e\u4ee3\u6570\u5f0f\u7684\u503c\u4e0d\u53ef\u80fd\u4e3a\u96f6\uff0e
A\uff0ea=5\uff1b B\uff0ea=10\uff1b
C\uff0ea=10\uff1b D\uff0ea=15\uff0e
A\uff0ea=-2\uff1b B\uff0ea=2\uff1b
C\uff0ea=1\uff1b D\uff0ea=-1\uff0e
A\uff0e\u4e00\u5207\u5b9e\u6570\uff1b B\uff0ex\u22607\u7684\u4e00\u5207\u5b9e\u6570\uff1b
C\uff0e\u65e0\u89e3\uff1b D\uff0ex\u2260-1\uff0c7\u7684\u4e00\u5207\u5b9e\u6570\uff0e
A\uff0ea=2\uff1b B\uff0ea\u53ea\u4e3a4\uff1b
C\uff0ea=4\u62160\uff1b D\uff0e\u4ee5\u4e0a\u7b54\u6848\u90fd\u4e0d\u5bf9\uff0e
A\uff0ea\uff1e0\uff1b B\uff0ea\uff1e0\u4e14a\u22601\uff1b
C\uff0ea\uff1e0\u4e14a\u22600\uff1b D\uff0ea\uff1c0\uff0e
A\uff0ea\uff1c0\uff1b B\uff0ea\uff1c0\u6216a=1\uff1b
C\uff0ea\uff1c0\u6216a=2\uff1b D\uff0ea\uff1e0\uff0e
\uff08\u4e09\uff09\u89e3\u65b9\u7a0b
51\uff0e\u7532\u3001\u4e59\u4e24\u4eba\u540c\u65f6\u4eceA\u5730\u51fa\u53d1\uff0c\u6b65\u884c30\u5343\u7c73\u5230B\u5730\u7532\u6bd4\u4e59\u6bcf\u5c0f\u65f6\u591a\u8d701\u5343\u7c73\uff0c\u7ed3\u679c\u7532\u6bd4\u4e59\u65e9\u52301\u5c0f\u65f6\uff0c\u4e24\u4eba\u6bcf\u5c0f\u65f6\u5404\u8d70\u591a\u5c11\u5343\u7c73\uff1f
1.\u89e3\u65b9\u7a0b6x+1=-4\uff0c\u79fb\u9879\u6b63\u786e\u7684\u662f\uff08 \uff09
A. 6x=4-1 B. -6x=-4-1 C.6x=1+4 D.6x=-4-1
2. \u89e3\u65b9\u7a0b-3x+5=2x-1, \u79fb\u9879\u6b63\u786e\u7684\u662f\uff08 \uff09
A.3x-2x=-1+5 B.-3x-2x=5-1 C.3x-2x=-1-5 D.-3x-2x=-1-5
3.\u65b9\u7a0b4\uff082-x\uff09-4\uff08x\uff09=60\u7684\u89e3\u662f\uff08 \uff09
A. 7 B. C.- D.-7
4.\u5982\u679c3x+2=8,\u90a3\u4e486x+1= \uff08 \uff09
A. 11 B.26 C.13 D.-11
5.\u5982\u679c\u65b9\u7a0b6x+3a=22\u4e0e\u65b9\u7a0b3x+5=11\u7684\u89e3\u76f8\u540c\uff0c\u90a3\u4e48a= \uff08 \uff09
A. B. C. - D.-
6.\u82e5 \u4e0e-5b2a3n-2\u662f\u540c\u7c7b\u9879\uff0c\u5219n= \uff08 \uff09
A. B. -3 C. D.3
7.\u5df2\u77e5y1= ,\u82e5y1+y2=20,\u5219x=( )
A.-30 B.-48 C.48 D.30
8.\u5982\u679c\u65b9\u7a0b5x=-3x+k\u7684\u89e3\u4e3a-1\uff0c\u5219k= \u3002
9. \u5982\u679c\u65b9\u7a0b3x+2a=12\u548c\u65b9\u7a0b3x-4=2\u7684\u89e3\u76f8\u540c\uff0c\u90a3\u4e48a=
10.\u4e09\u4e2a\u8fde\u7eed\u5947\u6570\u7684\u548c\u672a21\uff0c\u5219\u5b83\u4eec\u7684\u79ef\u4e3a
11.\u8981\u4f7f \u4e0e3m-2\u4e0d\u76f8\u7b49\uff0c\u5219m\u4e0d\u80fd\u53d6\u503c\u4e3a
12.\u82e52x3-2k+2k=41\u662f\u5173\u4e8ex\u7684\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5219x=
13.\u82e5x=0\u662f\u65b9\u7a0b2002x-a=2003x+3\u7684\u89e3\uff0c\u90a3\u4e48\u4ee3\u6570\u5f0f\u7684\u503c\u662f-a2+2
14.\u89e3\u4e0b\u5217\u65b9\u7a0b
\uff081\uff093x-7+4x=6x-2 \uff082\uff09-
\uff083\uff09(x+1)-2(x-1)=1-3x (4) 2(x-2)-6(x-1)=3(1-x)
\u7b54\u6848\uff1a
1. D 2. D 3. D 4. C 5. B 6. D 7.B
8\uff0ck= -8 9\uff0ca=3 10\uff0c315 11\uff0cm\u22601 12\uff0c x= 13\uff0c29
14\uff0c\uff081\uff09x=5 \uff082\uff09x= -22 \uff083\uff09x= -1 \uff084\uff09x= -6
\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b
\u9009\u62e9\u9898
1\uff0e\u5df2\u77e5(x+y)\u2236(x-y)=3\u22361\uff0c\u5219x\u2236y=\uff08 \uff09\u3002
A\u30013\u22361 B\u30012\u22361 C\u30011\u22361 D\u30011\u22362
2\uff0e\u65b9\u7a0b-2x+ m=-3\u7684\u89e3\u662f3\uff0c\u5219m\u7684\u503c\u4e3a\uff08 \uff09\u3002
A\u30016 B\u3001-6 C\u3001 D\u3001-18
3\uff0e\u5728\u65b9\u7a0b6x+1=1\uff0c2x= \uff0c7x-1=x-1\uff0c5x=2-x\u4e2d\u89e3\u4e3a \u7684\u65b9\u7a0b\u4e2a\u6570\u662f\uff08 \uff09\u3002
A\u30011\u4e2a B\u30012\u4e2a C\u30013\u4e2a D\u30014\u4e2a
4\uff0e\u6839\u636e\u201ca\u76843\u500d\u4e0e-4\u7edd\u5bf9\u503c\u7684\u5dee\u7b49\u4e8e9\u201d\u7684\u6570\u91cf\u5173\u7cfb\u53ef\u5f97\u65b9\u7a0b\uff08 \uff09\u3002
A\u3001|3a-(-4)|=9 B\u3001|3a-4|=9
C\u30013|a|-|-4|=9 D\u30013a-|-4|=9
5\uff0e\u82e5\u5173\u4e8ex\u7684\u65b9\u7a0b =4(x-1)\u7684\u89e3\u4e3ax=3\uff0c\u5219a\u7684\u503c\u4e3a\uff08 \uff09\u3002
A\u30012 B\u300122 C\u300110 D\u3001-2
\u7b54\u6848\u4e0e\u89e3\u6790
\u7b54\u6848\uff1a1\u3001B 2\u3001A 3\u3001B 4\u3001D 5\u3001C
\u89e3\u6790\uff1a
1\uff0e\u5206\u6790\uff1a\u672c\u9898\u8003\u67e5\u5bf9\u7b49\u5f0f\u8fdb\u884c\u6052\u7b49\u53d8\u5f62\u3002
\u7531(x+y)\u2236(x-y)=3\u22361\uff0c\u77e5x+y=3(x-y)\uff0c\u5316\u7b80\u5f97\uff1ax+y=3x-3y\uff0c
\u5f972x-4y=0\uff0c\u5373x=2y\uff0cx\u2236y=2\u22361\u3002
2\uff0e\u5206\u6790\uff1a\u2235 3\u662f\u65b9\u7a0b-2x+ m=-3\u7684\u89e3\uff0c
\u2234 -2\u00d73+ m=-3\uff0c
\u5373\uff0d6+ m=-3\uff0c
\u2234 m=-3+6\uff0c\u2014\u2014\u6839\u636e\u7b49\u5f0f\u7684\u57fa\u672c\u6027\u8d281
\u2234 m=6\uff0c\u2014\u2014\u6839\u636e\u7b49\u5f0f\u7684\u57fa\u672c\u6027\u8d282
\u2234 \u9009A\u3002
3\uff0e\u5206\u6790\uff1a6x+1=1\u7684\u89e3\u662f0\uff0c2x= \u7684\u89e3\u662f \uff0c7x-1=x-1\u7684\u89e3\u662f0\uff0c5x=2-x\u7684\u89e3\u662f \u3002
4\uff0e\u7565\u3002
5\uff0e\u5206\u6790\uff1a\u56e0\u4e3ax=3\u662f\u65b9\u7a0b =4(x-1)\u7684\u89e3\uff0c\u6545\u5c06x=3\u4ee3\u5165\u65b9\u7a0b\u6ee1\u8db3\u7b49\u5f0f\u3002
\u4e00\u3001 \u591a\u53d8\u91cf\u578b
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A\u5730\u2014B\u5730 K120 2\uff1a00 264\u5343\u7c73
\u89e3\uff1a
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A\u5730\u2014B\u5730 K120 2\uff1a00 4\uff1a24 2.4\u5c0f\u65f6 264\u5343\u7c73
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\u89e3\uff1a\u8bbe\u5217\u8f66\u63d0\u901f\u540e\u884c\u9a76\u65f6\u95f4\u4e3ax\u5c0f\u65f6. \u6839\u636e\u9898\u610f\uff0c\u5f97
\u7ecf\u68c0\u9a8c\uff0cx=2.4\u7b26\u5408\u9898\u610f\uff0e
\u7b54\uff1a\u5230\u7ad9\u65f6\u523b\u4e3a4:24\uff0c\u5386\u65f62.4\u5c0f\u65f6
\u4f8b\u516d\uff1a\uff082005\u6d59\u6c5f\u7701\uff09\u636e\u4e86\u89e3\uff0c\u706b\u8f66\u7968\u4ef7\u6309\u201c \u201d\u7684\u65b9\u6cd5\u6765\u786e\u5b9a\uff0e\u5df2\u77e5A\u7ad9\u81f3H\u7ad9\u603b\u91cc\u7a0b\u6570\u4e3a1 500\u5343\u7c73\uff0c\u5168\u7a0b\u53c2\u8003\u4ef7\u4e3a180\u5143\uff0e\u4e0b\u8868\u662f\u6cbf\u9014\u5404\u7ad9\u81f3H\u7ad9\u7684\u91cc\u7a0b\u6570\uff1a
\u8f66\u7ad9\u540d A B C D E F G H
\u5404\u7ad9\u81f3H\u7ad9\u7684\u91cc\u7a0b\u6570\uff08\u5355\u4f4d\uff1a\u5343\u7c73\uff09 1500 1130 910 622 402 219 72 0
\u4f8b\u5982\uff0c\u8981\u786e\u5b9a\u4eceB\u7ad9\u81f3E\u7ad9\u706b\u8f66\u7968\u4ef7\uff0c\u5176\u7968\u4ef7\u4e3a (\u5143)\uff0e
(1) \u6c42A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7(\u7ed3\u679c\u7cbe\u786e\u52301\u5143)\uff1b
(2) \u65c5\u5ba2\u738b\u5927\u5988\u4e58\u706b\u8f66\u53bb\u5973\u513f\u5bb6\uff0c\u4e0a\u8f66\u8fc7\u4e24\u7ad9\u540e\u62ff\u7740\u706b\u8f66\u7968\u95ee\u4e58\u52a1\u5458\uff1a\u6211\u5feb\u5230\u7ad9\u4e86\u5417\uff1f\u4e58\u52a1\u5458\u770b\u5230\u738b\u5927\u5988\u624b\u4e2d\u7968\u4ef7\u662f66\u5143\uff0c\u9a6c\u4e0a\u8bf4\u4e0b\u4e00\u7ad9\u5c31\u5230\u4e86\uff0e\u8bf7\u95ee\u738b\u5927\u5988\u662f\u5728\u54ea\u4e00\u7ad9\u4e0b\u8f66\u7684\uff1f\uff08\u8981\u6c42\u5199\u51fa\u89e3\u7b54\u8fc7\u7a0b\uff09\uff0e
\u89e3\uff1a (1) \u89e3\u6cd5\u4e00\uff1a\u7531\u5df2\u77e5\u53ef\u5f97 \uff0e
A\u7ad9\u81f3F\u7ad9\u5b9e\u9645\u91cc\u7a0b\u6570\u4e3a1500\uff0d219=1281\uff0e
\u6240\u4ee5A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7\u4e3a 0.12 1281=153.72 154(\u5143)
\u89e3\u6cd5\u4e8c\uff1a\u7531\u5df2\u77e5\u53ef\u5f97A\u7ad9\u81f3F\u7ad9\u7684\u706b\u8f66\u7968\u4ef7\u4e3a (\u5143)\uff0e
(2)\u8bbe\u738b\u5927\u5988\u5b9e\u9645\u4e58\u8f66\u91cc\u7a0b\u6570\u4e3ax\u5343\u7c73\uff0c\u6839\u636e\u9898\u610f\uff0c\u5f97\uff1a \uff0e
\u89e3\u5f97 x= (\u5343\u7c73)\uff0e
\u5bf9\u7167\u8868\u683c\u53ef\u77e5\uff0c D\u7ad9\u4e0eG\u7ad9\u8ddd\u79bb\u4e3a550\u5343\u7c73\uff0c\u6240\u4ee5\u738b\u5927\u5988\u662fD\u7ad9\u6216G\u7ad9\u4e0b\u7684\u8f66\uff0e
\u4ee3\u6570\u7b2c\u516d\u7ae0\u80fd\u529b\u81ea\u6d4b\u9898
\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u548c\u4e00\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u7ec4
\u521d\u4e2d\u6570\u5b66\u7f51\u7ad9http://emath.126.com
\u5206\u5f0f\u65b9\u7a0b
\uff08\u4e00\uff09\u586b\u7a7a
\u5173\u4e8ey\u7684\u65b9\u7a0b\u662f_____\uff0e
\uff08\u4e8c\uff09\u9009\u62e9
A\uff0ex=-3\uff1b B\uff0ex\u2260-3\uff1b
C\uff0e\u4e00\u5207\u5b9e\u6570\uff1b D\uff0e\u65e0\u89e3\uff0e
C\uff0e\u65e0\u89e3\uff1b D\uff0e\u4e00\u5207\u5b9e\u6570\uff0e
A\uff0ex=0\uff1b B\uff0ex=0\uff0cx=1\uff1b
C\uff0ex=0\uff0cx=-1\uff1b D\uff0e\u4ee3\u6570\u5f0f\u7684\u503c\u4e0d\u53ef\u80fd\u4e3a\u96f6\uff0e
A\uff0ea=5\uff1b B\uff0ea=10\uff1b
C\uff0ea=10\uff1b D\uff0ea=15\uff0e
A\uff0ea=-2\uff1b B\uff0ea=2\uff1b
C\uff0ea=1\uff1b D\uff0ea=-1\uff0e
A\uff0e\u4e00\u5207\u5b9e\u6570\uff1b B\uff0ex\u22607\u7684\u4e00\u5207\u5b9e\u6570\uff1b
C\uff0e\u65e0\u89e3\uff1b D\uff0ex\u2260-1\uff0c7\u7684\u4e00\u5207\u5b9e\u6570\uff0e
A\uff0ea=2\uff1b B\uff0ea\u53ea\u4e3a4\uff1b
C\uff0ea=4\u62160\uff1b D\uff0e\u4ee5\u4e0a\u7b54\u6848\u90fd\u4e0d\u5bf9\uff0e
A\uff0ea\uff1e0\uff1b B\uff0ea\uff1e0\u4e14a\u22601\uff1b
C\uff0ea\uff1e0\u4e14a\u22600\uff1b D\uff0ea\uff1c0\uff0e
A\uff0ea\uff1c0\uff1b B\uff0ea\uff1c0\u6216a=1\uff1b
C\uff0ea\uff1c0\u6216a=2\uff1b D\uff0ea\uff1e0\uff0e
\uff08\u4e09\uff09\u89e3\u65b9\u7a0b
51\uff0e\u7532\u3001\u4e59\u4e24\u4eba\u540c\u65f6\u4eceA\u5730\u51fa\u53d1\uff0c\u6b65\u884c30\u5343\u7c73\u5230B\u5730\u7532\u6bd4\u4e59\u6bcf\u5c0f\u65f6\u591a\u8d701\u5343\u7c73\uff0c\u7ed3\u679c\u7532\u6bd4\u4e59\u65e9\u52301\u5c0f\u65f6\uff0c\u4e24\u4eba\u6bcf\u5c0f\u65f6\u5404\u8d70\u591a\u5c11\u5343\u7c73\uff1f
http://219.226.9.43/Resource/CZ/CZSX/DGJC/CSSX/D2/math0003ZW1_0019.htm
(4)5x－5y＋5z (5)-5a²+25a-5a (6)2a(b+c)-3(b+c) (7)(ab+a)+(b+1)
(8)-4m³+16m³-28m (9)16x-25x³y² (10)36m²a-9m²a²-36m²
√32-3√1/2+√2
√12+√27/√3-√1/3×√12
√50+√30/√8-4
（√6-2√15）×√3-6√1/2
√2/3-4√216+43√1/6
√8+√30-√2
√40-5√1/10+√10
√2+√8/√2
√2/9+√50+√32
（1-√3）（√3+2）
（√8+3√6）÷√2-√3×√0.7
（-3+√6）（-3-√6）-（√3-1/√3）²
³√0.125-√3 1/16+³√（1-7/8）²
√2/3-√216+42√1/6
解方程√3 X-1=√2 X
求X
{√5 X-3√ Y=1}
{√3 X-√5 Y=2}
注：X全部不在根号内
√（1/2x）^2＋10/9x^2
=√[1/(4x^2)+10/(9x^2)]
=√49/36x^2
若x>0,=7/(6x)
若x<0,=-7/(6x)
√a^4mb^2n＋1
=√(a^2mb^n)^2＋1
=a^2mb^n＋1
√（4a^5＋8a^4）（a^2＋3a＋2）
=√[4a^4(a+2)][(a+2)(a+1)]
=√[4a^4(a+2)^2(a+1)]
=2a^2(a+2)√(a+1)
. 3√（1/6）-4√（50）+30√（2/3）
答案3√（1/6）-4√（50）+30√（2/3）
= 3×√6/6-4×5√2+30×√6/3
＝√6/2-20√2+10√6
2. （1-根号2）/2乘以（1＋根号2）／2
题是这样的二分之一减根号2乘以二分之一加根号2
答案：（1-根号2）/2乘以（1＋根号2）／2
=（1-√2）*（1-√2）／4
＝（1－2）／4
＝－1／4
1.3√（1/6）-4√（50）+30√（2/3） 答案3√（1/6）-4√（50）+30√（2/3） = 3×√6/6-4×5√2+30×√6/3 ＝√6/2-20√2+10√6 2. （1-根号2）/2乘以（1＋根号2）／2 题是这样的二分之一减根号2乘以二分之一加根号2 答案：（1-根号2）/2乘以（1＋根号2）／2 =（1-√2）*（1-√2）／4 ＝（1－2）／4 ＝－1／4 3.√（1/2x）^2＋10/9x^2 √[（1/2x）^2＋10/9x^2] =√(x^2/4+10x^2/9) =√(9x^2/36+40x^2/36) =√(49x^2/36) =7x/6; 4.√a^4mb^2n＋1（a、b为正数） [√(a^4mb^2n)]＋1（a、b为正数） =a^2mb^n+1; 5.√（4a^5＋8a^4）（a^2＋3a＋2）（a>=0） √[（4a^5＋8a^4）（a^2＋3a＋2）]（a>=0） =√[4a^4(a+2)(a+2)(a+1)] =√[(2a^2)^2(a+2)^2(a+1)] =2a^2(a+2)√(a+1). 太多了呀，只能这样了，我还有事 您好！ 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)² =(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√5 - 1/25√5 - 4/5√5 =√5*(5-1/25-4/5) =24/5√5 2.=√144+576 =√720 =12√5 3.)√(8/13)^2-(2/13)^2 = √(8/13+2/13)(8/13-2/13) =(2/13)√15
其实百度文库里有很多 或者你可以买一本参考书 还有就是实数计算掌握熟练就好 为什么要做这么多？好孩子啊~~
http://wenku.baidu.com/view/a9f731d950e2524de5187ee8.html
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绛旓細5 锛堚垰6-2鈭15锛壝椻垰3-6鈭1/2 6 鈭2/3-4鈭216+43鈭1/6 7 鈭8+鈭30-鈭2 8 鈭1/7+鈭63-鈭112 9 鈭40-5鈭1/10+鈭10 10 鈭2+鈭8/鈭2 11 鈭2/9+鈭50+鈭32 12 锛1-鈭3锛夛紙鈭3+2锛13 锛堚垰8+3鈭6锛壝封垰2-鈭3脳鈭0.7 14 锛-3+...
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绛旓細涓嬮潰鏄 涓哄ぇ瀹跺甫鏉ョ殑鍒濅簩骞寸骇濂ユ暟瀹炴暟閫夋嫨棰樺強绛旀锛屾杩庡ぇ瀹堕槄璇汇1锛庝笅鍒楀悇寮忎腑锛璁＄畻姝ｇ‘鐨勬槸锛堬級A. =4 B. =卤5 C. =1 D. =卤5 銆愮瓟妗堛慉 2锛庣殑绠楁湳骞虫柟鏍规槸锛堬級A. 3 B. C. 卤3 D. 卤 銆愮瓟妗堛態 銆愯В鏋愩戔埖 =3锛岃3鐨勭畻鏈钩鏂规牴鍗 锛屸埓 鐨勭畻鏈...
绛旓細1锛屼竴涓暟鐨勫钩鏂规牴锛屼簰涓虹浉鍙嶆暟锛屸埓a+3=15-2a 3a=12 a=4 2锛屸埖b鐨绠楁湳骞虫柟鏍逛负19 鎵浠=19²=361 鈭 c鐨勫钩鏂规牴鏄璐3 鈭碿=9 2c=18 鎵浠ュ師寮=361=a³+18 a³=343 鎵浠=7
绛旓細3鈭20-鈭45-鈭5鍒嗕箣1 =6鈭5-3鈭5-鈭5/5 =14鈭5/5 鈭2鍒嗕箣3+鈭3鍒嗕箣2 =3鈭2/2+2鈭3/3 =(9鈭2+4鈭3锛/6
