初一上册数学计算题 初一上册100道数学计算题及答案。
\u521d\u4e00\u6570\u5b66\u4e0a\u518c\u8ba1\u7b97\u98981000\u9053[-18]+29+[-52]+60= 19
[-3]+[-2]+[-1]+0+1+2= -3
[-301]+125+301+[-75]= 50
[-1]+[-1/2]+3/4+[-1/4]= -1
[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25
[-26.54]+[-6.14]+18.54+6.14= -8
1.125+[-17/5]+[-1/8]+[-0.6]= -3
[-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\u3001\u6211\u56fd\u7814\u5236\u7684\u201c\u66d9\u51493000\u8d85\u7ea7\u670d\u52a1\u5668\u201d,\u5b83\u7684\u5cf0\u503c\u8ba1\u7b97\u901f\u5ea6\u8fbe\u5230403,200,000,000\u6b21/\u79d2\uff0c\u7528\u79d1\u5b66\u8ba1\u6570\u6cd5\u53ef\u8868\u793a\u4e3a ( )
A. 4032\u00d7108 B. 403.2\u00d7109 C. 4.032\u00d71011 D. 0.4032\u00d71012
2\u3001\u4e0b\u9762\u56db\u4e2a\u56fe\u5f62\u6bcf\u4e2a\u90fd\u7531\u516d\u4e2a\u76f8\u540c\u7684\u5c0f\u6b63\u65b9\u5f62\u7ec4\u6210\uff0c\u6298\u53e0\u540e\u80fd\u56f4\u6210\u6b63\u65b9\u4f53\u7684\u662f \uff08 \uff09
3\u3001\u4e0b\u5217\u5404\u7ec4\u6570\u4e2d\uff0c\u76f8\u7b49\u7684\u4e00\u7ec4\u662f \uff08 \uff09
A\uff0e-1\u548c- 4+(-3) B. |-3|\u548c-\uff08-3\uff09 C. 3x2\uff0d2x=x D. 2x+3x=5x2
4.\u5df4\u9ece\u4e0e\u5317\u4eac\u7684\u65f6\u5dee\u662f-7\uff08\u6b63\u6570\u8868\u793a\u540c\u4e00\u65f6\u523b\u6bd4\u5317\u4eac\u65e9\u7684\u65f6\u6570\uff09\uff0c\u82e5\u5317\u4eac\u65f6\u95f4\u662f7\u67082\u65e514\uff1a00
\u65f6\u6574\uff0c\u5219\u5df4\u9ece\u65f6\u95f4\u662f \uff08 \uff09
A.7\u67082\u65e521\u65f6 B.7\u67082\u65e57\u65f6 C.7\u67081\u65e57\u65f6 D.7\u67082\u65e55\u65f6
5\u3001\u56fd\u5bb6\u89c4\u5b9a\u5b58\u6b3e\u5229\u606f\u7684\u7eb3\u7a0e\u529e\u6cd5\u662f\uff1a\u5229\u606f\u7a0e=\u5229\u606f\u00d720%\uff0c\u94f6\u884c\u4e00\u5e74\u5b9a\u671f\u7684\u5229\u7387\u4e3a2.25%\uff0c\u4eca\u5c0f
\u78ca\u53d6\u51fa\u4e00\u5e74\u5230\u671f\u7684\u672c\u91d1\u53ca\u5229\u606f\u65f6\uff0c\u4ea4\u7eb3\u4e864.5\u5143\u5229\u606f\u7a0e\uff0c\u5219\u5c0f\u78ca\u4e00\u5e74\u524d\u5b58\u5165\u94f6\u884c\u7684\u94b1\u4e3a A. 1000\u5143 B. 900\u5143 C. 800\u5143 D. 700\u5143 \uff08 \uff09
6\u3001\u67d0\u79cd\u54c1\u724c\u7684\u5f69\u7535\u964d\u4ef730%\u540e\uff0c\u6bcf\u53f0\u552e\u4ef7\u4e3aa\u5143\uff0c\u5219\u8be5\u54c1\u724c\u5f69\u7535\u6bcf\u53f0\u552e\u4ef7\u4e3a \uff08 \uff09
A. 0.7a \u5143 B. 0.3a\u5143 C. \u5143 D. \u5143
7\u3001\u4e24\u6761\u76f8\u4ea4\u76f4\u7ebf\u6240\u6210\u7684\u89d2\u4e2d \uff08 \uff09
A.\u5fc5\u6709\u4e00\u4e2a\u949d\u89d2 B.\u5fc5\u6709\u4e00\u4e2a\u9510\u89d2 C.\u5fc5\u6709\u4e00\u4e2a\u4e0d\u662f\u949d\u89d2 D.\u5fc5\u6709\u4e24\u4e2a\u9510\u89d2
8\u3001\u4e3a\u4e86\u8ba9\u4eba\u4eec\u611f\u53d7\u4e22\u5f03\u5851\u6599\u888b\u5bf9\u73af\u5883\u9020\u6210\u7684\u5f71\u54cd\uff0c\u67d0\u73ed\u73af\u4fdd\u5c0f\u7ec4\u7684\u516d\u540d\u540c\u5b66\u8bb0\u5f55\u4e86\u81ea\u5df1\u5bb6\u4e2d\u4e00\u5468\u5185\u4e22\u5f03\u7684\u5851\u6599\u888b\u7684\u6570\u91cf\uff0c\u7ed3\u679c\u5982\u4e0b\uff08\u5355\u4f4d\uff1a\u4e2a\uff09\uff1a33 25 28 26 25 31.\u5982\u679c\u8be5\u73ed\u670945\u540d\u5b66\u751f\uff0c\u6839\u636e\u63d0\u4f9b\u7684\u6570\u636e\u4f30\u8ba1\u672c\u5468\u5168\u73ed\u540c\u5b66\u5404\u5bb6\u603b\u5171\u4e22\u5f03\u5851\u6599\u888b\u7684\u6570\u91cf\u7ea6\u4e3a ( )
A.900\u4e2a B.1080\u4e2a C.1260\u4e2a D.1800\u4e2a
9\u3001\u82e5\u5173\u4e8ex\u7684\u65b9\u7a0b3x+5=m\u4e0ex\uff0d2m=5\u6709\u76f8\u540c\u7684\u89e3\uff0c\u5219x\u7684\u503c\u662f ( )
A. 3 B. \u20133 C. \u20134 D. 4
10\u3001\u5df2\u77e5:\u2502m + 3\u2502+3(n-2)2=0,\u5219m n\u503c\u662f ( )
A. \u20136 B.8 C. \u20139 D. 9
11. \u4e0b\u9762\u8bf4\u6cd5\u6b63\u786e\u7684\u662f ( )
A. \u8fc7\u76f4\u7ebf\u5916\u4e00\u70b9\u53ef\u4f5c\u65e0\u6570\u6761\u76f4\u7ebf\u4e0e\u5df2\u77e5\u76f4\u7ebf\u5e73\u884c B. \u8fc7\u4e00\u70b9\u53ef\u4f5c\u65e0\u6570\u6761\u76f4\u7ebf\u4e0e\u5df2\u77e5\u76f4\u7ebf\u5782\u76f4
C. \u8fc7\u4e24\u70b9\u6709\u4e14\u53ea\u6709\u4e8c\u6761\u76f4\u7ebf D. \u4e24\u70b9\u4e4b\u95f4\uff0c\u7ebf\u6bb5\u6700\u77ed.
12\u3001\u6b63\u65b9\u4f53\u7684\u622a\u9762\u4e2d\uff0c\u8fb9\u6570\u6700\u591a\u7684\u591a\u8fb9\u5f62\u662f \uff08 \uff09
A\uff0e\u56db\u8fb9\u5f62 B.\u4e94\u8fb9\u5f62 C.\u516d\u8fb9\u5f62 D. \u4e03\u8fb9\u5f62
\u4e8c\u3001 \u586b\u7a7a\u9898
13\u3001\u7528\u8ba1\u7b97\u5668\u6c424\u00d7\uff080.2\uff0d3\uff09+\uff08-2\uff094\u65f6\uff0c\u6309\u952e\u7684\u987a\u5e8f\u662f
14\u3001\u8ba1\u7b9751\u00b036\u02ca=________\u00b0
15\u3001\u5f20\u5927\u4f2f\u4ece\u62a5\u793e\u4ee5\u6bcf\u4efd0.4\u5143\u7684\u4ef7\u683c\u8d2d\u8fdb\u4e86a\u4efd\u62a5\u7eb8\uff0c\u4ee5\u6bcf\u4efd0.5\u5143\u7684\u4ef7\u683c\u552e\u51fa\u4e86b\u4efd\u62a5\u7eb8\uff0c\u5269\u4f59\u7684\u4ee5\u6bcf\u4efd0.2\u5143\u7684\u4ef7\u683c\u9000\u56de\u62a5\u793e\uff0c\u5219\u5f20\u5927\u4f2f\u7684\u5356\u62a5\u6536\u5165\u662f___________.
16\u3001 \u5df2\u77e5\uff1a\u5982\u56fe\uff0c\u7ebf\u6bb5AB=3.8\u339d\uff0cAC=1.4\u339d\uff0cD\u4e3aCB\u7684\u4e2d\u70b9\uff0c
A C D B \u5219DB= \u339d
17\u3001\u8bbe\u957f\u65b9\u4f53\u7684\u9762\u6570\u4e3af, \u68f1\u6570\u4e3av\uff0c\u9876\u70b9\u6570\u4e3ae\uff0c\u5219f + v + e =___________.
18.\u7528\u9ed1\u767d\u4e24\u79cd\u989c\u8272\u7684\u6b63\u516d\u8fb9\u5f62\u5730\u9762\u7816\u6309\u5982\u4e0b\u6240\u793a\u7684\u89c4\u5f8b\u62fc\u6210\u82e5\u5e72\u4e2a\u56fe\u6848\uff1a
\u5219\u7b2c\uff084\uff09\u4e2a\u56fe\u6848\u4e2d\u6709\u767d\u8272\u5730\u9762\u7816________\u5757\uff1b\u7b2cn
\uff081\uff09 \uff082\uff09 \uff083\uff09 \u4e2a\u56fe\u6848\u4e2d\u6709\u767d\u8272\u5730\u9762\u7816_________\u5757.
19. \u4e00\u4e2a\u888b\u4e2d\u6709\u767d\u74035\u4e2a\uff0c\u9ec4\u74034\u4e2a\uff0c\u7ea2\u74031\u4e2a\uff08\u6bcf\u4e2a\u7403\u9664\u989c\u8272\u5916\u5176\u4f59\u90fd\u76f8\u540c\uff09\uff0c\u6478\u5230__________\u7403\u7684\u673a\u4f1a\u6700\u5c0f
20\u3001\u4e00\u6b21\u4e7010\u65a4\u9e21\u86cb\u6253\u516b\u6298\u6bd4\u6253\u4e5d\u6298\u5c11\u82b12\u5143\u94b1,\u5219\u8fd910\u65a4\u9e21\u86cb\u7684\u539f\u4ef7\u662f________\u5143.
21\u3001\u4f60\u559c\u6b22\u5403\u62c9\u9762\u5417\uff1f\u62c9\u9762\u9986\u7684\u5e08\u5085\uff0c\u7528\u4e00\u6839\u5f88\u7c97\u7684\u9762\u6761\uff0c\u628a\u4e24\u5934\u634f\u5408\u5728\u4e00\u8d77\u62c9\u4f38\uff0c\u518d\u634f\u5408\uff0c\u518d\u62c9\u4f38\uff0c\u53cd\u590d\u51e0\u6b21\uff0c\u5c31\u628a\u8fd9\u6839\u5f88\u7c97\u7684\u9762\u6761\u62c9\u6210\u4e86\u8bb8\u591a\u7ec6\u7684\u9762\u6761\uff0c\u5982\u4e0b\u9762\u7684\u8349\u56fe\u6240\u793a\uff1a
\u2026\u2026
\u7b2c\u4e00\u6b21\u634f\u5408\u540e \u7b2c\u4e8c\u6b21\u634f\u5408\u540e \u7b2c\u4e09\u6b21\u634f\u5408\u540e
\u8fd9\u6837\u634f\u5408\u5230\u7b2c \u6b21\u540e\u53ef\u62c9\u51fa128\u6839\u7ec6\u9762\u6761\u3002
22\u3001\u82e5x=1\u65f6\uff0c\u4ee3\u6570\u5f0fax3\uff0bbx\uff0b1\u7684\u503c\u4e3a5\uff0c\u5219x=- 1\u65f6\uff0c\u4ee3\u6570\u5f0fax3\uff0bbx\uff0b1\u7684\u503c\u7b49\u4e8e
\u4e09\u3001 \u89e3\u7b54\u9898
23.\u8ba1\u7b97\u2460 36\u00d7\uff08 \uff0d \uff092 \u2461\u2223 (\uff0d2)3\u00d70.5\u2223\uff0d(\uff0d1.6)2\u00f7(\uff0d2)2
\u2462 14\uff08abc\uff0d2a\uff09\uff0b3(6a\uff0d2abc) \u2463 9x\uff0b6x2\uff0d3(x\uff0d x2),\u5176\u4e2dx=\uff0d2
24.\u89e3\u65b9\u7a0b\u2460 \uff0d = 1 \u2461 (x\uff0b1)=2\uff0d (x\uff0b2)
\u2462 { [ \uff08 x+5\uff09\uff0d4]+3}=2 \u2463 \uff0d =\uff0d1.6
25. \u5728\u5de6\u4e0b\u56fe\u76849\u4e2a\u65b9\u683c\u4e2d\u5206\u522b\u586b\u5165-6\uff0c-5\uff0c-4\uff0c-1\uff0c0\uff0c1\uff0c4\uff0c5\uff0c6\u4f7f\u5f97\u6bcf\u884c\u3001\u6bcf\u5217\u3001\u659c\u5bf9\u89d2\u7684\u4e09\u4e2a\u6570\u7684\u548c\u5747\u76f8\u7b49.
26. \u5728\u4e00\u76f4\u7ebf\u4e0a\u6709A\u3001B\u3001C\u4e09\u70b9\uff0c AB=4cm\uff0cBC=0.5AB\uff0c\u70b9O\u662f\u7ebf\u6bb5AC\u7684\u4e2d\u70b9\uff0c\u6c42\u7ebf\u6bb5OB\u7684\u957f\u5ea6.
27\u67d0\u6821\u5b66\u751f\u5217\u961f\u4ee58\u5343\u7c73/ \u65f6\u7684\u901f\u5ea6\u524d\u8fdb\uff0c\u5728\u961f\u5c3e\uff0c\u6821\u957f\u8ba9\u4e00\u540d\u5b66\u751f\u8dd1\u6b65\u5230\u961f\u4f0d\u7684\u6700\u524d\u9762\u627e\u5e26\u961f\u8001\u5e08\u4f20\u8fbe\u4e00\u4e2a\u6307\u793a\uff0c\u7136\u540e\u7acb\u5373\u8fd4\u56de\u961f\u5c3e\uff0c\u8fd9\u4f4d\u5b66\u751f\u7684\u901f\u5ea6\u662f12\u5343\u7c73/\u65f6\uff0c\u4ece\u961f\u5c3e\u51fa\u53d1\u8d76\u5230\u6392\u5934\u53c8\u56de\u961f\u5c3e\u5171\u7528\u4e863.6\u5206\u949f\uff0c\u6c42\u5b66\u751f\u961f\u4f0d\u7684\u957f\uff0e
28\u67d0\u73ed\u5168\u4f53\u540c\u5b66\u5728\u201c\u732e\u7231\u5fc3\u201d\u6d3b\u52a8\u4e2d\u90fd\u6350\u4e86\u56fe\u4e66\uff0c\u6350\u4e66\u60c5\u51b5\u5982\u4e0b\u8868\uff1a
\u6bcf\u4eba\u6350\u4e66\u7684\u518c\u6570 5 10 15 20
\u76f8\u5e94\u7684\u6350\u4e66\u4eba\u6570 17 22 4 2
\u6839\u636e\u9898\u76ee\u4e2d\u6240\u7ed9\u7684\u6761\u4ef6\u56de\u7b54\u4e0b\u5217\u95ee\u9898\uff1a
\uff081\uff09\u8be5\u73ed\u7684\u5b66\u751f\u5171 \u591a\u5c11\u540d\uff1b \uff082\uff09\u5168\u73ed\u4e00\u5171\u6350\u4e86 \u518c\u56fe\u4e66\uff1b
\uff083\uff09\u5c06\u4e0a\u9762\u7684\u6570\u636e\u6210\u5236\u4f5c\u9002\u5f53\u7684\u7edf\u8ba1\u56fe\u3002
29.\u661f\u661f\u679c\u6c41\u5e97\u4e2d\u7684A\u79cd\u679c\u6c41\u6bd4B\u79cd\u679c\u6c41\u8d351\u5143\uff0c\u5c0f\u5f6c\u548c\u540c\u5b66\u8981\u4e863 \u676fB\u79cd\u679c\u6c41\u30012\u676fA\u79cd\u679c\u6c41\uff0c\u4e00\u5171\u82b1\u4e8616\u5143\u3002A\u79cd\u679c\u6c41\u3001B\u79cd\u679c\u6c41\u7684\u5355\u4ef7\u5206\u522b\u662f\u591a\u5c11\u5143\uff1f
30.\u201c\u4e2d\u5546\u201d\u8fd1\u65e5\u63a8\u51fa\u201c\u4e70200\u5143\u900180\u5143\u201d\u7684\u916c\u5bbe\u6d3b\u52a8\uff0c\u73b0\u6709\u4e00\u987e\u5ba2\u8d2d\u4e70\u4e86200\u5143\u7684\u670d\u88c5\uff0c\u5f97\u523080\u5143\u7684\u8d2d\u7269\u8d60\u5238\uff08\u53ef\u5728\u5546\u573a\u901a\u7528\uff0c\u4f46\u4e0d\u80fd\u6362\u94b1\uff09\uff0c\u5f53\u8fd9\u540d\u987e\u5ba2\u5728\u8d2d\u4e70\u8fd9\u5957\u670d\u88c5\u65f6\uff0c\u4e00\u552e\u8d27\u5458\u5bf9\u987e\u5ba2\u8bf4\uff1a\u201c\u916c\u5bbe\u6d3b\u52a8\u4e2d\u8d2d\u4e70\u5546\u54c1\u6bd4\u8f83\u4fbf\u5b9c\uff0c\u76f8\u5f53\u4e8e\u62536\u6298\uff0c\u5373 100%=60%.\u201d\u4ed6\u7684\u8bf4\u6cd5\u5bf9\u5417\uff1f
31.\u67d0\u6750\u6599\u4f9b\u5e94\u5546\u5bf9\u987e\u5ba2\u5b9e\u884c\u5982\u4e0b\u4f18\u60e0\u529e\u6cd5\uff1a\u4e00\u6b21\u8d2d\u4e70\u91d1\u989d\u4e0d\u8d85\u8fc71\u4e07\u5143\uff0c\u4e0d\u4e88\u4f18\u60e0\uff1b\u4e00\u6b21\u8d2d\u4e70\u8d85
\u8fc71\u4e07\u5143\uff0c\u4f46\u4e0d\u8d85\u8fc73\u4e07\u5143\uff0c\u7ed9\u4e889\u6298\u4f18\u60e0\uff1b\u4e00\u6b21\u8d2d\u4e70\u8d85\u8fc73\u4e07\u5143\u7684\uff0c\u5176\u4e2d3\u4e07\u51439\u6298\u4f18\u60e0\uff0c\u8d85
\u8fc73\u4e07\u5143\u7684\u90e8\u52068\u6298\u4f18\u60e0\u3002\u67d0\u5382\u56e0\u5e93\u5bb9\u539f\u56e0\uff0c\u7b2c\u4e00\u6b21\u5728\u8be5\u4f9b\u5e94\u5546\u5904\u8d2d\u4e70\u6750\u6599\u4ed8\u6b3e7800\u5143\uff0c\u7b2c\u4e8c\u6b21
\u8d2d\u4e70\u4ed8\u6b3e26100\u5143\uff0c\u5982\u679c\u4ed6\u662f\u4e00\u6b21\u8d2d\u4e70\u540c\u6837\u6570\u91cf\u7684\u6750\u6599\uff0c\u53ef\u5c11\u4ed8\u91d1\u989d\u591a\u5c11\u5143\uff1f
\u4e00\u3001\u586b\u7a7a\u9898\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517124\u5206\uff09
1.\uff08\uff0d1\uff092002\uff0d\uff08\uff0d1\uff092003=_________________.
\u7b54\u6848\uff1a2
2.\u5df2\u77e5\u67d0\u6570\u7684 \u6bd4\u5b83\u5927 \uff0c\u82e5\u8bbe\u67d0\u6570\u4e3ax\uff0c\u5219\u53ef\u5217\u65b9\u7a0b_______________.
\u7b54\u6848\uff1a x=x+
3.\u5982\u56fe1\uff0c\u70b9A\u3001B\u3001C\u3001D\u5728\u76f4\u7ebfl\u4e0a.\u5219BC=_________\uff0dCD\uff0cAB+________+CD=AD\uff1b\u82e5AB=BC=CD\uff0c\u5219AB=________BD.
\u56fe1
\u7b54\u6848\uff1aBD\uff0cBC\uff0c
4.\u82e5\u2220\u03b1=41\u00b032\u2032\uff0c\u5219\u5b83\u7684\u4f59\u89d2\u662f____________\uff0c\u5b83\u7684\u8865\u89d2\u662f__________.
\u7b54\u6848\uff1a48\u00b028\u2032\uff0c138\u00b028\u2032
5.\u5982\u56fe2\uff0c\u6c42\u4e0b\u5217\u5404\u89d2\uff1a\u22201=___________,\u22202=___________,\u22203=___________.
\u56fe2
\u7b54\u6848\uff1a62.5\u00b0\uff0c25\u00b0\uff0c130\u00b0
6.\u4e24\u6761\u76f4\u7ebf\u76f8\u4ea4\uff0c\u6709_____________\u4e2a\u4ea4\u70b9\uff1b\u4e09\u6761\u76f4\u7ebf\u4e24\u4e24\u76f8\u4ea4\u6700\u591a\u6709_____________\u4e2a\u4ea4\u70b9\uff0c\u6700\u5c11\u6709_____________\u4e2a\u4ea4\u70b9.
\u7b54\u6848\uff1a\u4e14\u53ea\u6709\u4e00\uff0c\u4e09\uff0c\u4e00
7.38\u00b012\u2032=_____________\u00b0\uff0c67.5\u00b0=__________\u00b0___________\u2032.
\u7b54\u6848\uff1a38.2\uff0c67\uff0c30
8.\u5982\u679c x2\uff0d3x=1\u662f\u5173\u4e8ex\u7684\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5219a=_________________.
\u7b54\u6848\uff1a
\u4e8c\u3001\u9009\u62e9\u9898\uff1a\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517124\u5206\uff09
9.\u4e0b\u5217\u8bf4\u6cd5\u4e2d\uff0c\u6b63\u786e\u7684\u662f
A.\uff5ca\uff5c\u4e0d\u662f\u8d1f\u6570 B.\uff0da\u662f\u8d1f\u6570
C.\uff0d\uff08\uff0da\uff09\u4e00\u5b9a\u662f\u6b63\u6570 D. \u4e0d\u662f\u6574\u6570
\u7b54\u6848\uff1aA.
10.\u5e73\u9762\u4e0a\u6709\u4efb\u610f\u4e09\u70b9\uff0c\u7ecf\u8fc7\u5176\u4e2d\u4e24\u70b9\u753b\u4e00\u6761\u76f4\u7ebf\uff0c\u5171\u53ef\u4ee5\u753b
A.\u4e00\u6761\u76f4\u7ebf B.\u4e8c\u6761\u76f4\u7ebf C.\u4e09\u6761\u76f4\u7ebf D.\u4e00\u6761\u6216\u4e09\u6761\u76f4\u7ebf
\u7b54\u6848\uff1aD.
11.\u4e0b\u5217\u753b\u56fe\u8bed\u53e5\u4e2d\uff0c\u6b63\u786e\u7684\u662f
A.\u753b\u5c04\u7ebfOP=3 cm B.\u8fde\u7ed3A\u3001B\u4e24\u70b9
C.\u753b\u51faA\u3001B\u4e24\u70b9\u7684\u4e2d\u70b9 D.\u753b\u51faA\u3001B\u4e24\u70b9\u7684\u8ddd\u79bb
\u7b54\u6848\uff1aB.
12.\u4e0b\u5217\u56fe\u5f62\u4e2d\u80fd\u6298\u6210\u6b63\u65b9\u4f53\u7684\u6709
\u56fe3
A.1\u4e2a B.2\u4e2a C.3\u4e2a D.4\u4e2a
\u7b54\u6848\uff1aD.
13.\u4e0b\u5217\u56fe\u5f62\u662f\uff0c\u662f\u5de6\u8fb9\u56fe\u5f62\u7ed5\u76f4\u7ebfl\u65cb\u8f6c\u4e00\u5468\u540e\u5f97\u5230\u7684\u662f
\u56fe4
\u7b54\u6848\uff1aD.
14.\u56fe5\u662f\u67d0\u6751\u519c\u4f5c\u7269\u7edf\u8ba1\u56fe\uff0c\u5176\u4e2d\u6c34\u7a3b\u6240\u5360\u7684\u6bd4\u4f8b\u662f
\u56fe5
A.40% B.72% C.48% D.52%
\u7b54\u6848\uff1aC.
15.\u4e0b\u5217\u8bf4\u6cd5\uff0c\u6b63\u786e\u7684\u662f
\u2460\u6240\u6709\u7684\u76f4\u89d2\u90fd\u76f8\u7b49 \u2461\u6240\u6709\u7684\u4f59\u89d2\u90fd\u76f8\u7b49 \u2462\u7b49\u89d2\u7684\u8865\u89d2\u76f8\u7b49 \u2463\u76f8\u7b49\u7684\u89d2\u662f\u76f4\u89d2.\u5176\u4e2d\u6b63\u786e\u7684\u662f
A.\u2460\u2461 B.\u2460\u2462 C.\u2461\u2462 D.\u2462\u2463
\u7b54\u6848\uff1aB.
16.\u82e5\uff5cx\uff0d \uff5c+\uff082y+1\uff092=0\uff0c\u5219x2+ y2\u7684\u503c\u662f
A. B.
C.\uff0d D.\uff0d
\u7b54\u6848\uff1aB.
\u4e09\u3001\u89e3\u7b54\u4e0b\u5217\u5404\u9898
17.\u8ba1\u7b97\u9898\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517112\u5206\uff09
\uff081\uff09\uff08\uff0d \uff09\u00d7\uff08\uff0d1 \uff09\u00f7\uff08\uff0d1 \uff09 \uff082\uff0932\u00f7\uff08\uff0d2\uff093+\uff08\uff0d2\uff093\u00d7\uff08\uff0d \uff09\uff0d22
\uff083\uff09\uff08 \uff0d \uff09\u00f7\uff08 \uff0d \uff092\u00f7\uff08\uff0d6\uff092\uff0d\uff08\uff0d \uff092
\uff084\uff091 \u00d7\u30143\u00d7\uff08\uff0d \uff092\uff0d1\u3015\uff0d \u3014\uff08\uff0d2\uff092\uff0d\uff084.5\uff09\u00f73\u3015
\u7b54\u6848\uff1a\uff081\uff09\uff0d1 \uff082\uff09\uff0d2 \uff083\uff09\uff0d \uff084\uff09\uff0d
18.\u89e3\u65b9\u7a0b\uff1a\uff08\u6bcf\u5c0f\u98985\u5206\uff0c\u517110\u5206\uff09
\uff081\uff09 \u3014 \uff08 x\uff0d \uff09\uff0d8\u3015= x+1
\uff082\uff09 \uff0d \uff0d =0
\u7b54\u6848\uff1a\uff081\uff09x=\uff0d \uff082\uff09x=\uff0d
19.\uff086\u5206\uff09\u5982\u56fe6\uff0c\u5df2\u77e5AOB\u4e3a\u76f4\u7ebf\uff0cOC\u5e73\u5206\u2220AOD\uff0c\u2220BOD=50\u00b0\uff0c\u6c42\u2220AOC\u7684\u5ea6\u6570.
\u56fe6
\u7b54\u6848\uff1a65\u00b0
20.\uff086\u5206\uff09\u4e00\u4e2a\u89d2\u7684\u4f59\u89d2\u76843\u500d\u6bd4\u8fd9\u4e2a\u89d2\u7684\u8865\u89d2\u592718\u00b0\uff0c\u6c42\u8fd9\u4e2a\u89d2\u7684\u5ea6\u6570.
\u7b54\u6848\uff1a36\u00b0
21.\uff086\u5206\uff09\u5236\u4f5c\u9002\u5f53\u7684\u7edf\u8ba1\u56fe\u8868\u793a\u4e0b\u8868\u6570\u636e\uff1a
1949\u5e74\u4ee5\u540e\u6211\u56fd\u5386\u6b21\u4eba\u53e3\u666e\u67e5\u60c5\u51b5
\u5e74\u4efd 1953 1964 1982 1990 2000
\u4eba\u53e3\uff08\u4ebf\uff09 5.94 6.95 10.08 11.34 12.95
\u7b54\u6848\uff1a\u53ef\u5236\u4f5c\u6761\u5f62\u7edf\u8ba1\u56fe \uff08\u7565\uff09.
22.\uff0812\u5206\uff09\u4e00\u5217\u5ba2\u8f66\u957f200 m\uff0c\u4e00\u5217\u8d27\u8f66\u957f280 m\uff0c\u5728\u5e73\u884c\u7684\u8f68\u9053\u4e0a\u76f8\u5411\u884c\u9a76\uff0c\u4ece\u4e24\u8f66\u5934\u76f8\u9047\u5230\u4e24\u8f66\u5c3e\u76f8\u79bb\u7ecf\u8fc718 s\uff0c\u5df2\u77e5\u5ba2\u8f66\u4e0e\u8d27\u8f66\u7684\u901f\u5ea6\u4e4b\u6bd4\u662f5\u22363\uff0c\u95ee\u4e24\u8f66\u6bcf\u79d2\u5404\u884c\u9a76\u591a\u5c11\u7c73?
\u89e3\uff1a\u8bbe\u5ba2\u8f66\u7684\u901f\u5ea6\u662f5x\uff0c\u5219\u8d27\u8f66\u901f\u5ea6\u4e3a3x.\u6839\u636e\u9898\u610f\uff0c\u5f97
18\uff085x+3x\uff09=200+280.
\u89e3\u5f97x= \uff0c\u5373\u5ba2\u8f66\u7684\u901f\u5ea6\u662f m/s.\u8d27\u8f66\u7684\u901f\u5ea6\u662f10 m/s75\u00f7\u3014138\u00f7\uff08100-54\uff09\u3015 85\u00d7(95\uff0d1440\u00f724)
80400\uff0d(4300\uff0b870\u00f715) 240\u00d778\u00f7\uff08154-115\uff09
1437\u00d727\uff0b27\u00d7563 \u301475-\uff0812+18\uff09\u3015\u00f715
2160\u00f7\u3014\uff0883-79\uff09\u00d718\u3015 280\uff0b840\u00f724\u00d75
325\u00f713\u00d7(266\uff0d250) 85\u00d7(95\uff0d1440\u00f724)
58870\u00f7(105\uff0b20\u00d72) 1437\u00d727\uff0b27\u00d7563
81432\u00f7(13\u00d752\uff0b78) [37.85-\uff087.85+6.4\uff09] \u00d730
156\u00d7[(17.7-7.2)\u00f73] \uff08947\uff0d599\uff09\uff0b76\u00d764
36\u00d7(913\uff0d276\u00f723) [192\uff0d\uff0854\uff0b38\uff09]\u00d767
[\uff087.1-5.6\uff09\u00d70.9-1.15]\u00f72.5 81432\u00f7(13\u00d752\uff0b78)
5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62] \uff08947\uff0d599\uff09\uff0b76\u00d764 60\uff0d(9.5\uff0b28.9)]\u00f70.18 2.881\u00f70.43\uff0d0.24\u00d73.5 20\u00d7[(2.44\uff0d1.8)\u00f70.4\uff0b0.15] 28-(3.4 1.25\u00d72.4) 0.8\u00d7\u301415.5-(3.21 5.79)\u3015 \uff0831.8 3.2\u00d74\uff09\u00f75 194\uff0d64.8\u00f71.8\u00d70.9 36.72\u00f74.25\u00d79.9 3.416\u00f7\uff080.016\u00d735\uff09 0.8\u00d7[(10\uff0d6.76)\u00f71.2]
\uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09 (6.8-6.8\u00d70.55)\u00f78.5
0.12\u00d7 4.8\u00f70.12\u00d74.8 \uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
812-700\u00f7\uff089+31\u00d711\uff09 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
85+14\u00d7\uff0814+208\u00f726\uff09 120-36\u00d74\u00f718+35
\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09 9.72\u00d71.6-18.305\u00f77
4/7\u00f7[1/3\u00d7\uff083/5-3/10\uff09] \uff084/5+1/4\uff09\u00f77/3+7/10
12.78\uff0d0\u00f7\uff08 13.4\uff0b156.6 \uff09 37.812-700\u00f7\uff089+31\u00d711\uff09 \uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09 3.2\u00d7\uff081.5+2.5\uff09\u00f71.6
85+14\u00d7\uff0814+208\u00f726\uff09 \uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
(6.8-6.8\u00d70.55)\u00f78.5 \uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
0.12\u00d7 4.8\u00f70.12\u00d74.8 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
120-36\u00d74\u00f718+35 10.15-10.75\u00d70.4-5.7
5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74 347+45\u00d72-4160\u00f752
32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5 87\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62] 12\u00d76\u00f7\uff0812-7.2\uff09-6
3.2\u00d76+\uff081.5+2.5\uff09\u00f71.6 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
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)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*1/6
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
0.12\u03c7\uff0b1.8\u00d70.9=7.2 (9\uff0d5\u03c7)\u00d70.3=1.02 6.4\u03c7-\u03c7=28+4.4
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.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4\uff09
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
1.
a^3-2b^3+ab(2a-b)
=a^3+2a^2b-2b^3-ab^2
=a^2(a+2b)-b^2(2b+a)
=(a+2b)(a^2-b^2)
=(a+2b)(a+b)(a-b)
2.
(x^2+y^2)^2-4y(x^2+y^2)+4y^2
=(x^2+y^2-2y)^2
3.
(x^2+2x)^2+3(x^2+2x)+x^2+2x+3
=(x^2+2x)^2+4(x^2+2x)+3
=(x^2+2x+3)(x^2+2x+1)
=(x^2+2x+3)(x+1)^2
4.
(a+1)(a+2)+(2a+1)(a-2)-12
=a^2+3a+2+2a^2-3a-2-12
=3a^2-12
=3(a+2)(a-2)
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)
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
0.12\u03c7\uff0b1.8\u00d70.9=7.2 (9\uff0d5\u03c7)\u00d70.3=1.02 6.4\u03c7-\u03c7=28+4.4
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.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4\uff09
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
1.
a^3-2b^3+ab(2a-b)
=a^3+2a^2b-2b^3-ab^2
=a^2(a+2b)-b^2(2b+a)
=(a+2b)(a^2-b^2)
=(a+2b)(a+b)(a-b)
2.
(x^2+y^2)^2-4y(x^2+y^2)+4y^2
=(x^2+y^2-2y)^2
3.
(x^2+2x)^2+3(x^2+2x)+x^2+2x+3
=(x^2+2x)^2+4(x^2+2x)+3
=(x^2+2x+3)(x^2+2x+1)
=(x^2+2x+3)(x+1)^2
4.
(a+1)(a+2)+(2a+1)(a-2)-12
=a^2+3a+2+2a^2-3a-2-12
=3a^2-12
=3(a+2)(a-2)
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) 1\u3001\u5965\u8fd0\u4f1a\u4f1a\u573a\u91cc5\u63922\u53f7\u53ef\u4ee5\u7528\uff085\uff0c2\uff09\u8868\u793a\uff0c\u5219\uff087\uff0c4\uff09\u8868\u793a \u3002\u6bdb
2\u300181\u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f______,=________.
3\u3001\u4e0d\u7b49\u5f0f\uff0d4x\u2265\uff0d12\u7684\u6b63\u6574\u6570\u89e3\u4e3a .
4\u3001\u8981\u4f7f\u6709\u610f\u4e49\uff0c\u5219x\u7684\u53d6\u503c\u8303\u56f4\u662f_______________\u3002
5\u3001\u5728\u25b3ABC\u4e2d,\u5df2\u77e5\u4e24\u6761\u8fb9a=3,b=4,\u5219\u7b2c\u4e09\u8fb9c\u7684\u53d6\u503c\u8303\u56f4\u662f_________.
6\u3001\u7b49\u8170\u4e09\u89d2\u5f62\u4e00\u8fb9\u7b49\u4e8e5\uff0c\u53e6\u4e00\u8fb9\u7b49\u4e8e8\uff0c\u5219\u5468\u957f\u662f_________ .
7\u3001\u5982\u56fe\u6240\u793a\uff0c\u8bf7\u4f60\u6dfb\u52a0\u4e00\u4e2a\u6761\u4ef6\u4f7f\u5f97AD\u2016BC\uff0c \u3002
8\u3001\u82e5\u4e00\u4e2a\u6570\u7684\u7acb\u65b9\u6839\u5c31\u662f\u5b83\u672c\u8eab\uff0c\u5219\u8fd9\u4e2a\u6570\u662f \u3002
9\u3001\u70b9P\uff08-2\uff0c1\uff09\u5411\u4e0a\u5e73\u79fb2\u4e2a\u5355\u4f4d\u540e\u7684\u70b9\u7684\u5750\u6807\u4e3a \u3002
10\uff0e\u89c2\u5bdf\u4e0b\u5217\u7b49\u5f0f\uff0c =2\uff0c=3\uff0c =4\uff0c\u8bf7\u4f60\u5199\u51fa\u542b\u6709n\uff08n>2\u7684\u81ea\u7136\u6570\uff09\u7684\u7b49\u5f0f\u8868\u793a\u4e0a\u8ff0\u5404\u5f0f\u89c4\u5f8b\u7684\u4e00\u822c\u5316\u516c\u5f0f\uff1a .
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11\u3001\u5965\u8fd0\u4f1a\u9700\u8981\u4e00\u79cd\u591a\u8fb9\u5f62\u5f62\u72b6\u7684\u74f7\u7816\u7528\u6765\u94fa\u8bbe\u65e0\u7f1d\u5730\u677f\uff0c\u8d2d\u4e70\u7684\u74f7\u7816\u5f62\u72b6\u4e0d\u53ef\u80fd\u662f\uff08 \uff09
A\u3001\u7b49\u8fb9\u4e09\u89d2\u5f62; B\u3001\u6b63\u65b9\u5f62; C\u3001\u6b63\u516b\u8fb9\u5f62; D\u3001\u6b63\u516d\u8fb9\u5f62
12\u3001\u6709\u4e0b\u5217\u8bf4\u6cd5\uff1a
\uff081\uff09\u65e0\u7406\u6570\u5c31\u662f\u5f00\u65b9\u5f00\u4e0d\u5c3d\u7684\u6570\uff1b\uff082\uff09\u65e0\u7406\u6570\u662f\u65e0\u9650\u4e0d\u5faa\u73af\u5c0f\u6570\uff1b
\uff083\uff09\u65e0\u7406\u6570\u5305\u62ec\u6b63\u65e0\u7406\u6570\u3001\u96f6\u3001\u8d1f\u65e0\u7406\u6570\uff1b\uff084\uff09\u65e0\u7406\u6570\u90fd\u53ef\u4ee5\u7528\u6570\u8f74\u4e0a\u7684\u70b9\u6765\u8868\u793a\u3002\u5176\u4e2d\u6b63\u786e\u7684\u8bf4\u6cd5\u7684\u4e2a\u6570\u662f\uff08 \uff09
A\uff0e1 B\uff0e2 C\uff0e3 D\uff0e4
13\u3001\u5728\uff0c\uff0c-\uff0c\uff0c3.14\uff0c2+\uff0c- \uff0c0\uff0c\uff0c1.262662666\u2026\u4e2d\uff0c\u5c5e\u4e8e\u65e0\u7406\u6570\u7684\u4e2a\u6570\u662f\uff08 \uff09
A.3\u4e2a B. 4\u4e2a C. 5\u4e2a D.6\u4e2a
14.\u5df2\u77e5a<b,\u5219\u4e0b\u5217\u5f0f\u5b50\u6b63\u786e\u7684\u662f( )
A.a+5>b+5 B.3a>3b; C.-5a>-5b D.>
15. \u8bbe\u201c\u25cf\u201d\u201c\u25b2\u201d\u201c\u25a0\u201d\u8868\u793a\u4e09\u79cd\u4e0d\u540c\u7684\u7269\u4f53\uff0c\u73b0\u7528\u5929\u5e73\u79f0\u4e86\u4e24\u6b21\uff0c\u60c5\u51b5\u5982\u56fe2\u6240\u793a\uff0c\u90a3\u4e48\u25cf\u3001\u25b2\u3001\u25a0\u8fd9\u4e09\u79cd\u7269\u4f53\u6309\u8d28\u91cf\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6392\u5217\u4e3a\uff08 \uff09
A. \u25a0\u25cf\u25b2 B. \u25a0\u25b2\u25cf C. \u25b2\u25cf\u25a0 D. \u25b2\u25a0\u25cf
16\u3001\u82e5\u4e0d\u7b49\u5f0f\u7ec4\u7684\u89e3\u96c6\u4e3a-1\u2264x\u22643\uff0c\u5219\u56fe\u4e2d\u8868\u793a\u6b63\u786e\u7684\u662f\uff08 \uff09
17\u3001\u5df2\u77e5\u70b9M(3a-9\uff0c1-a)\u5728\u7b2c\u4e09\u8c61\u9650\uff0c\u4e14\u5b83\u7684\u5750\u6807\u90fd\u662f\u6574\u6570\uff0c\u5219a=( )
A.1 B.2 C\uff0e3 D\uff0eO
18\u3001\u5317\u4eac\u5c06\u4e3e\u529e\u4e00\u6b21\u5965\u8fd0\u4f1a\u7eaa\u5ff5\u96c6\u90ae\u5c55\u89c8\uff0c\u5c55\u51fa\u7684\u90ae\u7968\u82e5\u6bcf\u4eba3\u5f20\uff0c\u5219\u591a24\u5f20\uff0c\u82e5\u6bcf\u4eba4\u5f20\uff0c\u5219\u5c1126\u5f20\uff0c\u5219\u5c55\u51fa\u90ae\u7968\u5f20\u6570\u662f\uff1a( )
A\u3001174 B\u3001178 C\u3001168 D\u3001164
19\u3001\u4e3a\u8fce\u63a5\u5965\u8fd0\u4fdd\u62a4\u751f\u6001\u73af\u5883\uff0c\u6211\u7701\u67d0\u53bf\u54cd\u5e94\u56fd\u5bb6\u201c\u9000\u8015\u8fd8\u6797\u201d\u53f7\u53ec\uff0c\u5c06\u67d0\u4e00\u90e8\u5206\u8015\u5730\u6539\u4e3a\u6797\u5730\uff0c\u6539\u53d8\u540e\uff0c\u6797\u5730\u9762\u79ef\u548c\u8015\u5730\u9762\u79ef\u5171\u6709180\u5e73\u65b9\u5343\u7c73\uff0c\u8015\u5730\u9762\u79ef\u662f\u6797\u5730\u9762\u79ef\u768425%\uff0c\u4e3a\u6c42\u6539\u53d8\u540e\u6797\u5730\u9762\u79ef\u548c\u8015\u5730\u9762\u79ef\u5404\u591a\u5c11\u5e73\u65b9\u5343\u7c73\u3002\u8bbe\u6539\u53d8\u540e\u8015\u5730\u9762\u79efx\u5e73\u65b9\u5343\u7c73\uff0c\u6797\u5730\u5730\u9762\u79efy\u5e73\u65b9\u5343\u7c73\uff0c\u6839\u636e\u9898\u610f\uff0c\u5217\u51fa\u5982\u4e0b\u56db\u4e2a\u65b9\u7a0b\u7ec4\uff0c\u5176\u4e2d\u6b63\u786e\u7684\u662f\uff08\uff09
A B C D
20\u3001\u4e00\u6b21\u5965\u8fd0\u77e5\u8bc6\u7ade\u8d5b\u4e2d,\u670920\u9053\u9009\u62e9\u9898.\u8bc4\u5206\u6807\u51c6\u662f:\u5bf91\u9898\u7ed95\u5206,\u95191\u9898\u62632\u5206,\u4e0d\u7b54\u9898\u4e0d\u7ed9\u5206\u4e5f\u4e0d\u6263\u5206.\u798f\u5a03\u6676\u6676\u6709\u4e24\u9053\u9898\u672a\u7b54.\u81f3\u5c11\u7b54\u5bf9\u51e0\u9053\u9898,\u603b\u5206\u624d\u4e0d\u4f1a\u4f4e\u4e8e60\u5206.\u5219\u6676\u6676\u81f3\u5c11\u7b54\u5bf9\u7684\u9898\u6570\u662f( )
A.7\u9053 B.8\u9898 C.9\u9898 D.10\u9898
\u4e09\u3001\u798f\u5a03\u8d1d\u8d1d\u6c14\u5598\u5618\u5618\u5f97\u8dd1\u8fc7\u6765\u5bf9\u5927\u5bb6\u8bf4\uff1a\u201c\u5feb\u70b9\uff0c\u5965\u59d4\u4f1a\u62db\u8bb0\u5206\u5458\u548c\u7b97\u5206\u5458\u5462\uff0c\u6211\u4eec\u53bb\u770b\u770b\u5427\u3002\u201d\u5230\u90a3\u4e00\u770b\u539f\u6765\u4ed6\u4eec\u662f\u6709\u6761\u4ef6\u7684\uff0c\u5f97\u7b54\u5bf9\u4e0b\u9762\u7684\u9898\uff0c\u4f60\u80fd\u884c\u5417\uff1f\uff08\u517120\u679a\uff0c\u6bcf\u98985\u679a\uff09
\uff0821\uff09
(22)\u89e3\u4e0d\u7b49\u5f0f2x\uff0d1<4x\uff0b13\uff0c\u5c06\u89e3\u96c6\u5728\u6570\u8f74\u4e0a\u8868\u793a\uff1a
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25\u3001\u8fce\u8fce\u62ff\u6765\u5965\u8fd0\u573a\u9986\u5efa\u8bbe\u4e2d\u7684\u4e00\u5f20\u56fe\u7eb8\uff0c\u5df2\u77e5\uff1a\u5728\u25b3ABC\u4e2d\uff0cAD\uff0cAE\u5206\u522b\u662f \u25b3ABC\u7684\u9ad8\u548c\u89d2\u5e73\u5206\u7ebf\uff0c\u82e5\u2220B=30\u00b0\uff0c \u2220C=50\u00b0.\u4f60\u80fd\u5e2e\u52a9\u5de5\u4eba\u5e08\u5085\u89e3\u51b3\u4e0b\u9762\u7684\u95ee\u9898\u5417\uff1f
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26\u3001\u798f\u5a03\u8fce\u8fce\u51c6\u5907\u4e70\u4e00\u53ea\u5c0f\u732b\u548c\u4e00\u53ea\u5c0f\u72d7\u73a9\u5177\uff0c\u5546\u5e97\u8001\u677f\u6ca1\u6709\u544a\u8bc9\u8fce\u8fce\u73a9\u5177\u7684\u4ef7\u683c\uff0c\u800c\u662f\u7ed9\u4e86\u5979\u4e0b\u9762\u7684\u4fe1\u606f\uff0c\u6765\u548c\u8fce\u8fce\u4e00\u8d77\u7b97\u7b97\u6bcf\u53ea\u5c0f\u732b\u548c\u5c0f\u72d7\u7684\u4ef7\u683c\u5427\uff01\uff088\u679a\uff09
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2x+17=35
3x-67=11
12+8x=52
0.8x-4.2=2.2
2x+5=10
3x-15=75
4x+40=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
\u7b54\u6848\uff1ax=48 y=47
(2) 18x+23y=2303
74x-y=1998
\u7b54\u6848\uff1ax=27 y=79
(3) 44x+90y=7796
44x+y=3476
\u7b54\u6848\uff1ax=79 y=48
(4) 76x-66y=4082
30x-y=2940
\u7b54\u6848\uff1ax=98 y=51
(5) 67x+54y=8546
71x-y=5680
\u7b54\u6848\uff1ax=80 y=59
(6) 42x-95y=-1410
21x-y=1575
\u7b54\u6848\uff1ax=75 y=48
(7) 47x-40y=853
34x-y=2006
\u7b54\u6848\uff1ax=59 y=48
(8) 19x-32y=-1786
75x+y=4950
\u7b54\u6848\uff1ax=66 y=95
(9) 97x+24y=7202
58x-y=2900
\u7b54\u6848\uff1ax=50 y=98
(10) 42x+85y=6362
63x-y=1638
\u7b54\u6848\uff1ax=26 y=62
(11) 85x-92y=-2518
27x-y=486
\u7b54\u6848\uff1ax=18 y=44
(12) 79x+40y=2419
56x-y=1176
\u7b54\u6848\uff1ax=21 y=19
(13) 80x-87y=2156
22x-y=880
\u7b54\u6848\uff1ax=40 y=12
(14) 32x+62y=5134
57x+y=2850
\u7b54\u6848\uff1ax=50 y=57
一、单项选择 (每小题3分,共30分)
1、一个数的立方等于它本身,这个数是 ( )
A、0 B、1 C、-1,1 D、-1,1,0
2、下列各式中,不相等的是 ( )
A、(-3)2和-32 B、(-3)2和32 C、(-2)3和-23 D、|-2|3和|-23|
3、(-1)200+(-1)201=( )
A、0 B、1 C、2 D、-2
4、有一组数为:-1,1/2,-1/3,1/4,-1/5,1/6,…找规律得到第7个数是( )
A、-1/7 B、1/7 C、-7 D、7
5、下列说法正确的是( ) A、有理数的绝对值一定是正数
B、如果两个数的绝对值相等,那么这两个数相等
C、如果一个数是负数,那么这个数的绝对值是它的相反数
D、绝对值越大,这个数就越大
6、比较-1/5与-1/6的大小,结果为 ( )
A、> B、< C、= D、不确定
7、下列说法中错误的是( )
A、零除以任何数都是零。 B、-7/9的倒数的绝对值是9/7。
C、相反数等于它的本身的数是零和一切正数。
D、除以一个数,等于乘以它的倒数。
8、(-m)101>0,则一定有( )
A、m>0 B、m<0 C、m=0 D、以上都不对
9、一个正整数n与它的倒数1/n、相反数-n相比较,正确的是 ( )
A、-n≤n≤1/n B、-n<1/n<n
C、1/n<n<-n D、-n<1/n≤n
二、填空题 每小题3分,共30分)
1、12的相反数与-7的绝对值的和是____________________。
2、一天早晨的气温是-5℃,中午又上升了10℃,半夜又下降了8℃,则半夜的气温是__________________。
3、在数轴上,-4与-6之间的距离是____________________。
4、若a=6,b=-2,c=-4,并且a-b+(-c)-(-d)=1,则d的值是__________。
5、若一个数的50%是-5.85,则这个数是_________________。
6、一个数的平方等于81,则这个数是____________________。
7、如果|a|=2.3,则a=__________________________。
8、计算-|-6/7|=___________________。
9、绝对值大于2而小于5的所有数是____________________。
10、有一列数,观察规律,并填写后面的数,-5,-2,1,4,_______,________,________。
三、计算题 (每小题5分,共20分)
1、-15+6÷(-3)×1/2 2、(1/4-1/2+1/6)×24
3、|-5/14|×(-3/7)2÷3/14 4、2/3+(-1/5)-1+1/3
四、解答题 (每小题10分,共20分)
1、某地探空气球地气象观测资料表明,高度每增加1千米、气温就大约降低6℃,若该地区地面温度为21℃,高空某处温度为-39℃,求此处的高度为多少千米?
2、10名学生体检测体重,以50千克为基准,超过的数记为正,不足的数记为负,称得结果如下(单位:千克) 2,3,-7.5,-3,5,-8,3.5,4.5,8,-1.5
这10名学生的总体重为多少?平均体重为多少?
七年级(上)数学期末测试题
班级 姓名 分数______
一、耐心填一填(每小题3分,共30分)
1.(1)1.4的相反数是 ; (2) 的倒数是 ;(3)— = .
2.已知 ,则-nm= .
3.已知 为一元一次方程,则n= .
4.如图,它是一个正方体的展开图,若正方体的对面表示的数互为相反数,则a-(b-c)= .
5.延长线段AB到C,使BC= AB,反向延长AC到D使AD= AC,若AB=8cm,则CD= .
6.在线段AB上再添上 个点,能使线段AB上共有15条不同的线段.
7.质检员抽查一批零件的合格率。已知零件的规定尺寸为30±0.5cm。现抽查了10个零件,检查结果为:30.3,30.0,30.4,29.4,29.9,30.2,29.8,30.6,29.5,30.5(单位:cm),则这批零件的合格率为 .
8.某商场在“十.一”长假期间每天营业额是15万元,由此推算10月份的总营业额约为15×31=465(万元),你认为这样的推算是否合理?答: .
9.已知∠AOB=50°,∠BOC=30°则∠AOC= .
10.为了明春的教学,请你根据今秋教学中存在的问题,向数学老师提一点建议:
二、精心选一选,你一定慧眼识金(2分×8=16分)
11.-22与(-2)2 ( )
A.相等 B.互为相反数 C .互为倒数 D.它们的积为16
12.已知有理数a、b在数轴上的位置如图所示,则a、-a、b、-b之间的大小关系是( )
A.-a<-b<a<b
B. a<-b<b<-a
C.-b<a<-a<b
D.a<b<-b<-a
13.小明想知道银河系里恒星大约有多少颗,他通过( )获取有关资料.
A.问卷调查 B.实地考察 C.查阅文献资料 D.实验
14.用四舍五入把0.06097精确到千分位的近似值的有效数字是( )
A.0、6、0 B.0、6、1、0 C.6、0、9 D.6、1
15.下列展开图中是左图的展开图的是( )
A B C D
16.一条弯曲的公路改为直道,可以缩短路程,其道理用几何知识解释的应是( )
A.两点之间线段最短;B.两点确定一条直线; C.线段可以大小比较;D.线段有两个端点
17.为了估计湖中有多少条鱼,从湖里捕捉50条鱼做记号,然后放回湖里,经过一段时 间,等带记号的鱼完全混于鱼群中,在捕捉第二次鱼200条,有10条做了记号,则估计湖里有鱼( )
A .400条 B .600条 C .800条 D .1000条
18.某车间原计划13小时生产一批零件,后来每小时多生产10件,用了12小时不但完成了任务,而且还多生产60件.设原计划每小时生产x个零件,则所列方程为( )
A.13x=12(x+10)+60 B.12(x+10)=13x+60
C. D.
三、细心解一解,你一定是数学行家!
19.展示你的运算能力(4分×2=8分)
(1) (2) )
20.展示你解方程的能力(4分×2=8分)
(1)3(20-y)=6y-4(y-11) (2)
21.一个角的补角加上10°后,等于这个角的余角的3倍,求这个角。(6分)
22.相信你一定行!(8分)
已知a与b互为相反数,c、d互为倒数, ,y不能作除数,
求 的值.
23.如图,∠COD=116°,∠BOD=90°,OA平分∠BOC, 求∠AOD的度数.(6分)
四、用心想一想,成功一定属于你!
24.当一个明白的消费者.(8分)
仔细观察下图,认真阅读对话.
小朋友:阿姨,我买一盒饼干和一袋牛奶。(递上10元钱)
售货员:小朋友,本来你用10元钱买一盒饼干是有多的,但要买一袋牛奶就少1元钱啦!今天是儿童节,我给你买的饼干打八折,两样的东西请拿好,还找你8角钱。
根据对话内容,请求出饼干和牛奶的标价是多少元?
25.探索与发现(2分+2分+2分+4分=10分)
将连续的奇数1,3,5,7,9……,排成如图所示的数阵.(1)十字框中的五个数的和与中间数15有什么关系?
(2)设中间数为a,用代数式表示十字框中五数之和.
(3)将十字框中上下左右平移,可框住另外五个数,这五个数的和还有这种规律吗?
(4)十字框中五个数之和能等于2005吗?若能,请写出这五个数;若不能,说明理由.
1 3 5 7 9
11 13 15 17 19
21 23 25 27 29
31 33 35 37 39
41 43 45 47 49
……
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绛旓細1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3]1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3]1-1/3[4x/3-1/3]=x/2-1/2[13x/3-10/3]1-4x/9-1/9=x/2-13x/6+10/6 4x/9-x/2+13/6=10/6-4-1/9 8x/18-9x/18+39x/18=30/18-18/18-2/18 38x/18=...
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绛旓細1銆侊紞15锛6梅(锛3)脳1/2 2銆(1/4锛1/2锛1/6)脳24 3銆亅锛5/14|脳(锛3/7)2梅3/14 4銆2/3锛(锛1/5)锛1锛1/3 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...
绛旓細1. 2x-10.3x=15 2 . 0.52x-(1-0.52)x=80 3 . x/2+3x/2=7 4 . 3x+7=32-2x 5 . 3x+5(138-x)=540 6 . 3x-7(x-1)=3-2(x+3)7 . 18x+3x-3=18-2(2x-1)8 . 3(20-y)=6y-4(y-11)9 . -(x/4-1)=5 10. 3[4(5y-1)-8]=6 11.5x-10=8 12.12(x...
绛旓細1. 2x-10.3x=15 2 . 0.52x-(1-0.52)x=80 3 . x/2+3x/2=7 4 . 3x+7=32-2x 5 . 3x+5(138-x)=540 6 . 3x-7(x-1)=3-2(x+3)7 . 18x+3x-3=18-2(2x-1)8 . 3(20-y)=6y-4(y-11)9 . -(x/4-1)=5 10. 3[4(5y-1)-8]=6 11.5x-10=8 12.12(x...