七年级上册的数学题
\u4e03\u5e74\u7ea7\u4e0a\u518c\u7684\u6570\u5b66\u98982x+17=35
3x-64=11
12+8x=52
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
\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
(15) 83x-49y=82
59x+y=2183
\u7b54\u6848\uff1ax=37 y=61
(16) 91x+70y=5845
95x-y=4275
\u7b54\u6848\uff1ax=45 y=25
(17) 29x+44y=5281
88x-y=3608
\u7b54\u6848\uff1ax=41 y=93
(18) 25x-95y=-4355
40x-y=2000
\u7b54\u6848\uff1ax=50 y=59
(19) 54x+68y=3284
78x+y=1404
\u7b54\u6848\uff1ax=18 y=34
(20) 70x+13y=3520
52x+y=2132
\u7b54\u6848\uff1ax=41 y=50
(21) 48x-54y=-3186
24x+y=1080
\u7b54\u6848\uff1ax=45 y=99
(22) 36x+77y=7619
47x-y=799
\u7b54\u6848\uff1ax=17 y=91
(23) 13x-42y=-2717
31x-y=1333
\u7b54\u6848\uff1ax=43 y=78
(24) 28x+28y=3332
52x-y=4628
\u7b54\u6848\uff1ax=89 y=30
(25) 62x-98y=-2564
46x-y=2024
\u7b54\u6848\uff1ax=44 y=54
(26) 79x-76y=-4388
26x-y=832
\u7b54\u6848\uff1ax=32 y=91
(27) 63x-40y=-821
42x-y=546
\u7b54\u6848\uff1ax=13 y=41
(28) 69x-96y=-1209
42x+y=3822
\u7b54\u6848\uff1ax=91 y=78
(29) 85x+67y=7338
11x+y=308
\u7b54\u6848\uff1ax=28 y=74
(30) 78x+74y=12928
14x+y=1218
\u7b54\u6848\uff1ax=87 y=83
(31) 39x+42y=5331
59x-y=5841
\u7b54\u6848\uff1ax=99 y=35
(32) 29x+18y=1916
58x+y=2320
\u7b54\u6848\uff1ax=40 y=42
(33) 40x+31y=6043
45x-y=3555
\u7b54\u6848\uff1ax=79 y=93
(34) 47x+50y=8598
45x+y=3780
\u7b54\u6848\uff1ax=84 y=93
(35) 45x-30y=-1455
29x-y=725
\u7b54\u6848\uff1ax=25 y=86
(36) 11x-43y=-1361
47x+y=799
\u7b54\u6848\uff1ax=17 y=36
(37) 33x+59y=3254
94x+y=1034
\u7b54\u6848\uff1ax=11 y=49
(38) 89x-74y=-2735
68x+y=1020
\u7b54\u6848\uff1ax=15 y=55
(39) 94x+71y=7517
78x+y=3822
\u7b54\u6848\uff1ax=49 y=41
(40) 28x-62y=-4934
46x+y=552
\u7b54\u6848\uff1ax=12 y=85
(41) 75x+43y=8472
17x-y=1394
\u7b54\u6848\uff1ax=82 y=54
(42) 41x-38y=-1180
29x+y=1450
\u7b54\u6848\uff1ax=50 y=85
(43) 22x-59y=824
63x+y=4725
\u7b54\u6848\uff1ax=75 y=14
(44) 95x-56y=-401
90x+y=1530
\u7b54\u6848\uff1ax=17 y=36
(45) 93x-52y=-852
29x+y=464
\u7b54\u6848\uff1ax=16 y=45
(46) 93x+12y=8823
54x+y=4914
\u7b54\u6848\uff1ax=91 y=30
(47) 21x-63y=84
20x+y=1880
\u7b54\u6848\uff1ax=94 y=30
(48) 48x+93y=9756
38x-y=950
\u7b54\u6848\uff1ax=25 y=92
(49) 99x-67y=4011
75x-y=5475
\u7b54\u6848\uff1ax=73 y=48
(50) 83x+64y=9291
90x-y=3690
\u7b54\u6848\uff1ax=41 y=92
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=1/3
5-6=5x x=-1/5
6*x=42 x=7
55-y=33 y=22
11*3x=60 x=20/11
8-y=2 y=-6
1.x+2=3
2.x+32=33
3.x+6=18
4.4+x=47
5.19-x=8
6.98-x=13
7.66-x=10
8.5x=10
9.3x=27
10.7x=7
11.8x=8
12.9x=9
13.10x=100
14.66x=660
15.7x=49
16.2x=4
17.3x=9
18.4x=16
19.5x=25
20.6x=36
21.8x=64
22.9x=81
23.10x=100
24.11x=121
25.12x=144
26.13x=169
27.14x=196
28.15x=225
29.16x=256
30.17x=289
31.18x=324
32.19x=361
33.20x=400
31.21x=441
32.22x=484
33.111x=12321
34.1111x=1234321
35.11111x=123454321
36.111111x=12345654321
37.46/x=23
38.64/x=8
39.99/x=11
40.1235467564x=0
41.2x+1= -2+x
42.4x-3(20-x)=3
43.\uff0e-2(x-1)=4
44.3X+189=521
45.4Y+119=22 5
46.3X+77=59
47.4Y-6985=81
48.X=0.1
49.5X=55.5
50.Y=50-85
\uff08-8\uff09-\uff08-1\uff09 =-7
45+\uff08-30\uff09 =15
-1.5-\uff08-11.5\uff09 =10
-0.25-\uff08-0.5\uff09 =0.25
15-\u30101-\uff08-20-4\uff09\u3011 =-10
-40-28-\uff08-19\uff09+\uff08-24\uff09 =-73
22.54+\uff08-4.4\uff09+\uff08-12.54\uff09+4.4 =10
\uff082/3{\u4e09\u5206\u53ea\u4e8c \u201c/\u201d\u662f\u5206\u6570\u7ebf}-1/2\uff09-\uff081/3-5/6\uff09=2/3
2.4-\uff08-3/5\uff09+\uff08-3.1\uff09+4/5 =0.7
\uff08-6/13\uff09+\uff08-7/13\uff09-\uff08-2\uff09 =1
3/4-\uff08-11/6\uff09+\uff08-7/3\uff09 =1/4
11+\uff08-22\uff09-3\u00d7\uff08-11\uff09 =22
\uff08-0.1\uff09\u00f70.5\u00d7(-100) =20
(-2)\u76843\u6b21\u65b9-9 =-17
23\u00f7[-9-(-4)] =-23/5
(3/4-7/8)\u00f7(-7/8) =1/7
(-60)\u00d7(3/4+5/6)=-95
[-|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
-1+2-3+4-5+6-7
-50-28+(-24)-(-22)
-19.8-(-20.3)-(+20.2)-10.8
0.25- +(-1 )-(+3 )
-1-\u30141-(1-0.6\u00f73)\u3015\u00d7\u30142-(-3)\u00d7(-4)\u3015
0\u00f7(-4)-42-(-8)\u00f7(-1)3
-32-(-3) 2-(-3)3+(-1)6
3\u00d7(-2)2+(-2\u00d73)2+(-2+3)2
(-12)\u00f74\u00d7(-6)\u00f72
(-12)\u00f74\u00d7(-6)\u00d72
75\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)
-(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
\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\uff08\u4ee5\u4e0a\u8ba1\u7b97\u9898\uff0c\u627e\u6b7b\u6211\u4e86\uff0c\u8fd8\u6709\u4e00\u4e9b\u662f\u81ea\u5df1\u5199\u7684\uff09
1\uff0e\u8ba1\u7b97\u9898\uff1a\uff0810\u2032\u00d75=50\u2032\uff09
\uff081\uff093\uff0e28-4\uff0e76+1 - \uff1b
\uff082\uff092\uff0e75-2 -3 +1 \uff1b
\uff083\uff0942\u00f7\uff08-1 \uff09-1 \u00f7\uff08-0.125\uff09;
\uff084\uff09(-48) \u00f782-(-25) \u00f7(-6)2;
\uff085\uff09- +( )\u00d7(-2.4).
2.\u8ba1\u7b97\u9898\uff1a\uff0810\u2032\u00d75=50\u2032\uff09
\uff081\uff09-23\u00f71 \u00d7\uff08-1 \uff092\u00f7\uff081 \uff092\uff1b
\uff082\uff09-14-\uff082-0.5\uff09\u00d7 \u00d7[( )2-( )3];
\uff083\uff09-1 \u00d7[1-3\u00d7(- )2]-( )2\u00d7(-2)3\u00f7(- )3
\uff084\uff09(0.12+0.32) \u00f7 [-22+(-3)2-3 \u00d7 ];
(5)-6.24\u00d732+31.2\u00d7(-2)3+(-0.51) \u00d7624.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.\u586b\u7a7a\u9898\uff1a
(1)\u5982\u662f \uff0c\u90a3\u4e48ac 0\uff1b\u5982\u679c \uff0c\u90a3\u4e48ac 0;
(2)\u82e5 \uff0c\u5219abc= ; -a2b2c2= ;
(3)\u5df2\u77e5a\uff0cb\u4e92\u4e3a\u76f8\u53cd\u6570\uff0cc\uff0cd\u4e92\u4e3a\u5012\u6570\uff0cx\u7684\u7edd\u5bf9\u503c\u7b49\u4e8e2\uff0c\u90a3\u4e48x2-(a+b)+cdx= .
2\uff0e\u8ba1\u7b97\uff1a
\uff081\uff09-32-
\uff082\uff09{1+[ ]\u00d7(-2)4}\u00f7(- );
\uff083\uff095-3\u00d7{-2+4\u00d7[-3\u00d7(-2)2-(-4) \u00f7(-1)3]-7}.
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
\u7532\u75281000\u5143\u4eba\u6c11\u5e01\u8d2d\u4e70\u4e86\u4e00\u624b\u80a1\u7968\uff0c\u968f\u5373\u4ed6\u5c06\u8fd9\u624b\u80a1\u7968\u8f6c\u5356\u7ed9\u4e59\uff0c\u83b7\u522910%\uff0c\u800c\u540e\u4e59\u53c8\u5c06\u8fd9\u624b\u80a1\u7968\u53cd\u5356\u7ed9\u7532\uff0c\u4f46\u4e59\u635f\u5931\u4e8610%.\u6700\u540e\u7532\u6309\u4e59\u5356\u7ed9\u7532\u7684\u4ef7\u683c\u7684\u4e5d\u6298\u5c06\u8fd9\u624b\u80a1\u7968\u5356\u7ed9\u4e86\u4e59\uff0c\u5728\u4e0a\u8ff0\u80a1\u7968\u4ea4\u6613\u4e2d\uff08 \uff09
A\uff0e\u7532\u521a\u597d\u4e8f\u76c8\u5e73\u8861\uff1b B\uff0e\u7532\u76c8\u52291\u5143\uff1b
C\uff0e\u7532\u76c8\u52299\u5143\uff1b D\uff0e\u7532\u4e8f\u672c1.1\u5143.
\u53c2\u8003\u7b54\u6848\uff1a
\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1\uff0e\uff081\uff09-0.73 \uff082\uff09-1 ; \uff083\uff09-14; \uff084\uff09- ; \uff085\uff09-2.9
2\uff0e(1)-3 (2)-1 ; (3)- ; (4)1; (5)-624.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.(1)>\uff0c>; (2)24\uff0c-576; (3)2\u62166.[\u63d0\u793a\uff1a\u2235 =2 \u2234x2=4\uff0cx=\u00b12]. 2.(1)-31; (2)-8 (3)224
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011 B
\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\uff08\u4ee5\u4e0a\u7ec3\u4e60\u9898\uff09
http://www.jsjyss.cn/czsj/czsj31_39.htm \u5148\u7ed9\u4f60\u51e0\u9053
\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011\uff08\u65f6\u95f445\u5206\u949f\uff0c\u6ee1\u5206100\u5206\uff09
1\uff0e\u8ba1\u7b97\u9898\uff1a\uff0810\u2032\u00d75=50\u2032\uff09
\uff081\uff093\uff0e28-4\uff0e76+1 - \uff1b
\uff082\uff092\uff0e75-2 -3 +1 \uff1b
\uff083\uff0942\u00f7\uff08-1 \uff09-1 \u00f7\uff08-0.125\uff09;
\uff084\uff09(-48) \u00f782-(-25) \u00f7(-6)2;
\uff085\uff09- +( )\u00d7(-2.4).
2.\u8ba1\u7b97\u9898\uff1a\uff0810\u2032\u00d75=50\u2032\uff09
\uff081\uff09-23\u00f71 \u00d7\uff08-1 \uff092\u00f7\uff081 \uff092\uff1b
\uff082\uff09-14-\uff082-0.5\uff09\u00d7 \u00d7[( )2-( )3];
\uff083\uff09-1 \u00d7[1-3\u00d7(- )2]-( )2\u00d7(-2)3\u00f7(- )3
\uff084\uff09(0.12+0.32) \u00f7 [-22+(-3)2-3 \u00d7 ];
(5)-6.24\u00d732+31.2\u00d7(-2)3+(-0.51) \u00d7624.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.\u586b\u7a7a\u9898\uff1a
(1)\u5982\u662f \uff0c\u90a3\u4e48ac 0\uff1b\u5982\u679c \uff0c\u90a3\u4e48ac 0;
(2)\u82e5 \uff0c\u5219abc= ; -a2b2c2= ;
(3)\u5df2\u77e5a\uff0cb\u4e92\u4e3a\u76f8\u53cd\u6570\uff0cc\uff0cd\u4e92\u4e3a\u5012\u6570\uff0cx\u7684\u7edd\u5bf9\u503c\u7b49\u4e8e2\uff0c\u90a3\u4e48x2-(a+b)+cdx= .
2\uff0e\u8ba1\u7b97\uff1a
\uff081\uff09-32-
\uff082\uff09{1+[ ]\u00d7(-2)4}\u00f7(- );
\uff083\uff095-3\u00d7{-2+4\u00d7[-3\u00d7(-2)2-(-4) \u00f7(-1)3]-7}.
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011
\u7532\u75281000\u5143\u4eba\u6c11\u5e01\u8d2d\u4e70\u4e86\u4e00\u624b\u80a1\u7968\uff0c\u968f\u5373\u4ed6\u5c06\u8fd9\u624b\u80a1\u7968\u8f6c\u5356\u7ed9\u4e59\uff0c\u83b7\u522910%\uff0c\u800c\u540e\u4e59\u53c8\u5c06\u8fd9\u624b\u80a1\u7968\u53cd\u5356\u7ed9\u7532\uff0c\u4f46\u4e59\u635f\u5931\u4e8610%.\u6700\u540e\u7532\u6309\u4e59\u5356\u7ed9\u7532\u7684\u4ef7\u683c\u7684\u4e5d\u6298\u5c06\u8fd9\u624b\u80a1\u7968\u5356\u7ed9\u4e86\u4e59\uff0c\u5728\u4e0a\u8ff0\u80a1\u7968\u4ea4\u6613\u4e2d\uff08 \uff09
A\uff0e\u7532\u521a\u597d\u4e8f\u76c8\u5e73\u8861\uff1b B\uff0e\u7532\u76c8\u52291\u5143\uff1b
C\uff0e\u7532\u76c8\u52299\u5143\uff1b D\uff0e\u7532\u4e8f\u672c1.1\u5143.
\u53c2\u8003\u7b54\u6848\uff1a
\u3010\u540c\u6b65\u8fbe\u7eb2\u7ec3\u4e60\u3011
1\uff0e\uff081\uff09-0.73 \uff082\uff09-1 ; \uff083\uff09-14; \uff084\uff09- ; \uff085\uff09-2.9
2\uff0e(1)-3 (2)-1 ; (3)- ; (4)1; (5)-624.
\u3010\u7d20\u8d28\u4f18\u5316\u8bad\u7ec3\u3011
1.(1)>\uff0c>; (2)24\uff0c-576; (3)2\u62166.[\u63d0\u793a\uff1a\u2235 =2 \u2234x2=4\uff0cx=\u00b12]. 2.(1)-31; (2)-8 (3)224
\u3010\u751f\u6d3b\u5b9e\u9645\u8fd0\u7528\u3011 B
\u53c2\u8003\u8d44\u6599\uff1ahttp://edu.jx163.com/edu2/test/attche/site327/20070124/00e04c793857072105990c.doc
75\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
\u56de\u7b54\u8005\uff1a 754791551 - \u9b54\u6cd5\u5b66\u5f92 \u4e00\u7ea7 10-5 13:26
(\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)
(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
\u8fd8\u670950\u9053\u9898\uff0c\u4e0d\u8fc7\u6ca1\u6709\u7b54\u6848
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)
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u96f6\u51cf\u53bba\u7684\u76f8\u53cd\u6570,\u5176\u7ed3\u679c\u662f_____________; (2)\u82e5a-b>a,\u5219b\u662f_____________\u6570; (3)\u4ece-3.14\u4e2d\u51cf\u53bb-\u03c0,\u5176\u5dee\u5e94\u4e3a____________; (4)\u88ab\u51cf\u6570\u662f-12(4/5),\u5dee\u662f4.2,\u5219\u51cf\u6570\u5e94\u662f_____________; (5)\u82e5b-a<-,\u5219a,b\u7684\u5173\u7cfb\u662f___________,\u82e5a-b<0,\u5219a,b\u7684\u5173\u7cfb\u662f______________; (6)(+22/3)-( )=-7
(\u4e09)\u5224\u65ad\u9898:
(1)\u4e00\u4e2a\u6570\u51cf\u53bb\u4e00\u4e2a\u8d1f\u6570,\u5dee\u6bd4\u88ab\u51cf\u6570\u5c0f. (2)\u4e00\u4e2a\u6570\u51cf\u53bb\u4e00\u4e2a\u6b63\u6570,\u5dee\u6bd4\u88ab\u51cf\u6570\u5c0f. (3)0\u51cf\u53bb\u4efb\u4f55\u6570,\u6240\u5f97\u7684\u5dee\u603b\u7b49\u4e8e\u8fd9\u4e2a\u6570\u7684\u76f8\u53cd\u6570. (4)\u82e5X+(-Y)=Z,\u5219X=Y+Z (5)\u82e5a0
\u4e00)\u9009\u62e9\u9898:
(1)\u5df2\u77e5a,b\u662f\u4e24\u4e2a\u6709\u7406\u6570,\u5982\u679c\u5b83\u4eec\u7684\u5546a/b=0,\u90a3\u4e48( ) (A)a=0\u4e14b\u22600 (B)a=0 (C)a=0\u6216b=0 (D)a=0\u6216b\u22600 (2)\u4e0b\u5217\u7ed9\u5b9a\u56db\u7ec4\u65701\u548c1;-1\u548c-1;0\u548c0;-2/3\u548c-3/2,\u5176\u4e2d\u4e92\u4e3a\u5012\u6570\u7684\u662f( ) (A)\u53ea\u6709 (B)\u53ea\u6709 (C)\u53ea\u6709 (D)\u90fd\u662f (3)\u5982\u679ca/|b|(b\u22600)\u662f\u6b63\u6574\u6570,\u5219( ) (A)|b|\u662fa\u7684\u7ea6\u6570 (B)|b|\u662fa\u7684\u500d\u6570 (C)a\u4e0eb\u540c\u53f7 (D)a\u4e0eb\u5f02\u53f7 (4)\u5982\u679ca>b,\u90a3\u4e48\u4e00\u5b9a\u6709( ) (A)a+b>a (B)a-b>a (C)2a>ab (D)a/b>1
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u5f53|a|/a=1\u65f6,a______________0;\u5f53|a|/a=-1\u65f6,a______________0;(\u586b>,0,\u5219a___________0; (11)\u82e5ab/c0,\u5219b___________0; (12)\u82e5a/b>0,b/c(-0.3)4>-106 (B)(-0.3)4>-106>(-0.2)3 (C)-106>(-0.2)3>(-0.3)4 (D)(-0.3)4>(-0.2)3>-106 (4)\u82e5a\u4e3a\u6709\u7406\u6570,\u4e14a2>a,\u5219a\u7684\u53d6\u503c\u8303\u56f4\u662f( ) (A)a1\u6216a<0 (5)\u4e0b\u9762\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8868\u793a106000,\u5176\u4e2d\u6b63\u786e\u7684\u662f( ) (A)1.06*105 (B)10.6*105 (C)1.06*106 (D)0.106*107 (6)\u5df2\u77e51.2363=1.888,\u5219123.63\u7b49\u4e8e( ) (A)1888 (B)18880 (C)188800 (D)1888000 (7)\u82e5a\u662f\u6709\u7406\u6570,\u4e0b\u5217\u5404\u5f0f\u603b\u80fd\u6210\u7acb\u7684\u662f( ) (A)(-a)4=a4 (B)(-a)3=A4 (C)-a4=(-a)4 (D)-a3=a3 (8)\u8ba1\u7b97:(-1)1-(-2)2-(-3)3-(-4)4\u6240\u5f97\u7ed3\u679c\u662f( ) (A)288 (B)-288 (C)-234 (D)280
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u572823\u4e2d,3\u662f________,2\u662f_______,\u5e42\u662f________;\u82e5\u628a3\u770b\u4f5c\u5e42,\u5219\u5b83\u7684\u5e95\u6570\u662f________,
\u6307\u6570\u662f________; (2)\u6839\u636e\u5e42\u7684\u610f\u4e49:(-2)3\u8868\u793a________\u76f8\u4e58; (-3)2v\u8868\u793a________\u76f8\u4e58;-23\u8868\u793a________. (3)\u5e73\u65b9\u7b49\u4e8e36/49\u7684\u6709\u7406\u6570\u662f________;\u7acb\u65b9\u7b49\u4e8e-27/64\u7684\u6570\u662f________ (4)\u628a\u4e00\u4e2a\u5927\u4e8e10\u7684\u6b63\u6570\u8bb0\u6210a*10n(n\u4e3a\u6b63\u6574\u6570)\u7684\u5f62\u6210,a\u7684\u8303\u56f4\u662f________,\u8fd9\u91ccn\u6bd4\u539f\u6765\u7684\u6574
\u6570\u4f4d\u6570\u5c11_________,\u8fd9\u79cd\u8bb0\u6570\u6cd5\u79f0\u4e3a\u79d1\u5b66\u8bb0\u6570\u6cd5; (5)\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8bb0\u51fa\u4e0b\u9762\u5404\u6570:4000=___________;950000=________________;\u5730\u7403
\u7684\u8d28\u91cf\u7ea6\u4e3a49800...0\u514b(28\u4f4d),\u53ef\u8bb0\u4e3a________; (6)\u4e0b\u9762\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8bb0\u51fa\u7684\u6570,\u539f\u6765\u5404\u4e3a\u591a\u5c11 105=_____________;2*105=______________; 9.7*107=______________9.756*103=_____________ (7)\u4e0b\u5217\u5404\u6570\u5206\u522b\u662f\u51e0\u4f4d\u81ea\u7136\u6570 7*106\u662f______\u4f4d\u6570 1.1*109\u662f________\u4f4d\u6570; 3.78*107\u662f______\u4f4d\u6570 1010\u662f________\u4f4d\u6570; (8)\u82e5\u6709\u7406\u6570m 0,b0 (B)a-|b|>0 (C)a2+b3>0 (D)a0 (C)a,b\u4e92\u4e3a\u76f8\u53cd\u6570; (D)-ab (C)a
(5)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5f97\u5230\u7684\u8fd1\u4f3c\u65701.20\u6240\u8868\u793a\u7684\u51c6\u786e\u6570a\u7684\u8303\u56f4\u662f( )
(A)1.195\u2264a<1.205 (B)1.15\u2264a<1.18 (C)1.10\u2264a<1.30 (D)1.200\u2264a<1.205 (6)\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f( ) (A)\u8fd1\u4f3c\u65703.80\u7684\u7cbe\u786e\u5ea6\u4e0e\u8fd1\u4f3c\u657038\u7684\u7cbe\u786e\u5ea6\u76f8\u540c; (B)\u8fd1\u4f3c\u657038.0\u4e0e\u8fd1\u4f3c\u657038\u7684\u6709\u6548\u6570\u5b57\u4e2a\u6570\u4e00\u6837 (C)3.1416\u7cbe\u786e\u5230\u767e\u5206\u4f4d\u540e,\u6709\u4e09\u4e2a\u6709\u6548\u6570\u5b573,1,4; (D)\u628a123*102\u8bb0\u62101.23*104,\u5176\u6709\u6548\u6570\u5b57\u6709\u56db\u4e2a.
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u5199\u51fa\u4e0b\u5217\u7531\u56db\u820d\u4e94\u5165\u5f97\u5230\u7684\u8fd1\u4f3c\u503c\u6570\u7684\u7cbe\u786e\u5ea6\u4e0e\u6709\u6548\u6570\u5b57: (1)\u8fd1\u4f3c\u657085\u7cbe\u786e\u5230________\u4f4d,\u6709\u6548\u6570\u5b57\u662f________; (2)\u8fd1\u4f3c\u65703\u4e07\u7cbe\u786e\u5230______\u4f4d,\u6709\u6548\u6570\u5b57\u662f________; (3)\u8fd1\u4f3c\u65705200\u5343\u7cbe\u786e\u5230________,\u6709\u6548\u6570\u5b57\u662f_________; (4)\u8fd1\u4f3c\u65700.20\u7cbe\u786e\u5230_________\u4f4d,\u6709\u6548\u6570\u5b57\u662f_____________. (2)\u8bbee=2.71828......,\u53d6\u8fd1\u4f3c\u65702.7\u662f\u7cbe\u786e\u5230__________\u4f4d,\u6709_______\u4e2a\u6709\u6548\u6570\u5b57;
\u53d6\u8fd1\u4f3c\u65702.7183\u662f\u7cbe\u786e\u5230_________\u4f4d,\u6709_______\u4e2a\u6709\u6548\u6570\u5b57. (3)\u7531\u56db\u820d\u4e94\u5165\u5f97\u5230\u03c0=3.1416,\u7cbe\u786e\u52300.001\u7684\u8fd1\u4f3c\u503c\u662f\u03c0=__________; (4)3.1416\u4fdd\u7559\u4e09\u4e2a\u6709\u6548\u6570\u5b57\u7684\u8fd1\u4f3c\u503c\u662f_____________;
(\u4e09)\u5224\u65ad\u9898:
(1)\u8fd1\u4f3c\u657025.0\u7cbe\u786e\u4ee5\u4e2a\u75ca,\u6709\u6548\u6570\u5b57\u662f2,5; (2)\u8fd1\u4f3c\u65704\u5343\u548c\u8fd1\u4f3c\u65704000\u7684\u7cbe\u786e\u7a0b\u5ea6\u4e00\u6837; (3)\u8fd1\u4f3c\u65704\u5343\u548c\u8fd1\u4f3c\u65704*10^3\u7684\u7cbe\u786e\u7a0b\u5ea6\u4e00\u6837; (4)9.949\u7cbe\u786e\u52300.01\u7684\u8fd1\u4f3c\u6570\u662f9.95.
\u7ec3\u4e60\u516b(B\u7ea7)
(\u4e00)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5bf9\u4e0b\u5217\u5404\u6570\u53d6\u8fd1\u4f3c\u503c(\u8981\u6c42\u4fdd\u7559\u4e09\u4e2a\u6709\u6548\u6570\u5b57): (1)37.27 (2)810.9 (3)0.0045078 (4)3.079
(\u4e8c)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5bf9\u4e0b\u5217\u5404\u6570\u53d6\u8fd1\u4f3c\u503c(\u8981\u6c42\u7cbe\u786e\u5230\u5343\u4f4d): (1)37890.6 (2)213612.4 (3)1906.57
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
\u795d\u60a8\u5b66\u4e60\u8fdb\u6b65\uff01\u6211\u7684\u624b\u90fd\u9178\u4e86\u3002
1.\u5c06\u81ea\u7136\u65701\uff0c2\uff0c3\uff0c4\uff0c5...\u4e00\u6b21\u5199\u4e0b\u53bb\u7ec4\u6210\u4e00\u4e2a\u6570\uff1a12345678910111213.....\uff0c\u5982\u679c\u5199\u5230\u67d0\u4e00\u4e2a\u81ea\u7136\u6570\uff0c\u6240\u7ec4\u6210\u7684\u6570\u6070\u597d\u7b2c\u4e00\u6b21\u80fd\u88ab72\u6574\u9664\uff0c\u90a3\u4e48\u8fd9\u4e2a\u81ea\u7136\u6570\u662f\u591a\u5c11\uff1f\uff1f
2.\u57281\uff0c2\uff0c3\uff0c.....\uff0c1995\u8fd91995\u7ed9\u4e66\u4e2d\uff0c\u627e\u51fa\u6240\u6709\u6ee1\u8db3\u4e0b\u5217\u6761\u4ef6\u7684\u6b63\u6574\u6570\u3002
a\uff1a(1995+a)|1995a
\u95ee\u9898\u8865\u5145\uff1a\u201c|\u201d\u4ee3\u8868\u540e\u8005\u80fd\u88ab\u524d\u8005\u6574\u9664
\u63d0\u95ee\u8005\uff1a \u6843\u5b50\u4e5f\u75af\u72c2 - \u89c1\u4e60\u9b54\u6cd5\u5e08 \u4e8c\u7ea7 \u6700\u4f73\u7b54\u6848
1\u3001\u8981\u80fd\u88ab72\u6574\u9664\uff0c\u5373\u88ab8\uff0c9\u6574\u9664\u3002
\u88ab8\u6574\u9664\u7684\u6761\u4ef6:\u6700\u540e\u4e09\u4f4d\u6570\u53ef\u4ee5\u88ab8\u6574\u9664\uff1b
\u88ab9\u6574\u9664\u7684\u6761\u4ef6:\u8fd9\u4e2a\u6570\u6bcf\u4e00\u4f4d\u7684\u6570\u5b57\u76f8\u52a0\u6240\u5f97\u7684\u6570\u80fd\u88ab9\u6574\u9664\u3002
\u4e00\u4e2a\u6570\u5b57\uff0c\u88ab9\u9664\u7684\u4f59\u6570\u7b49\u4e8e\u8fd9\u4e2a\u6570\u5404\u4f4d\u6570\u5b57\u4e4b\u548c\u88ab9\u9664\u7684\u4f59\u6570\u3002
\u8fd9\u4e2a\u6570\u4e3a1234567891112131415......313233343536
\u5373\u4e3a\u5199\u523036
2\u3001\u8bbe1995a/\uff081995+a)=b\uff0c
\u56e0\u5f0f\u5206\u89e3\u53ef\u5f97\uff081995+a)(1995-b\uff09=1995^2
\u800c1995^2=3^2*5^2*7^2*19^2
\u5982\u4ee4a<1995,\u5373\u628a1995^2\u5206\u89e3\u4e3a\u4e24\u4e2a\u6570\u76f8\u4e58\uff0c\u800c\u5176\u4e2d\u4e00\u4e2a\u5927\u4e8e1995\uff0c\u5c0f\u4e8e1995+1995=3990
\u6ee1\u8db3\u8fd9\u6837\u7684\u56e0\u5f0f\u6709\u4ee5\u4e0b\u51e0\u4e2a:
1995^2=2527*1575
=3249*1225
=3675*1083
=2205*1805
=2793*1425
=3325*1197
\u6b64\u65f6\u89e3\u5f97a\u503c\u5206\u522b\u4e3a\uff1a532\uff0c1254\uff0c1680\uff0c210\uff0c798\uff0c1330
一、填空题（每小题2分，共26分）
1、│－7│=7
2、 -7的倒数是-(1/7)
3、0.519精确到百分位的近似值数为0.52
4、计算：（－1）2006 =-2006
5、（－7.5）＋6.9 =-0.6
6、－5的相反数是5
7、用科学计数法表示：457100 =4.571x10的5次方
8、在数轴上到表示1的点的距离等于3的点所表示的数是4或-2
9、已知m＜0，则
10、如果x 2 = 4，那么x =2
11、比较大小：－3 小于－2.
12、若x = 4是方程ax－2x = 4的解，则a =3
13、已知： ，则 .
二、选择题（每小题3分，共15分）
14、下列近似数中，有四个有效数字的数是………………………（ ）
（A）0.0320 （B）0.0032 （C）0.3200 （D）0.0302
15、下列说法中，正确的是…………………………………………（ ）
（A） 正数和负数统称为有理数
（B） 互为相反数的两个数之和为零
（C） 如果两个数的绝对值相等，那么这两个数一定相等
（D） 0是最小的有理数
17、足球比赛的计分规则为胜一场得3分；平一场得1分；负一 场得0分，
某队打14场，负5场，得19分，那么这个队胜……………（ ）
（A）3场 （B）4场 （C）5场 （D）6场
18、两个数之和为负，积为正。则这两个数是 ……………………（ ）
（A） 同为负数 （B）同为正数 （C）一正一负 （D）有一个是0
三、计算下列各题（每小题5分，共20分）
19、9＋（－2）－10－（－8） 20、∣－48∣÷8－（－4）×
21、－2 4＋（－75）÷（－5）2－（－4）×（－3)
26、观察下列各式：
1 3 =1 2
1 3＋2 3 =3 2
1 3＋2 3＋3 3 = 6 2
1 3＋2 3＋3 3＋4 3 = 10 2
…………………………
根据上述的规律，写出第7个算式：
27、股民小李上星期五买进某公司股票1000股，每股27元，下表为本周内每日该
股票的涨跌情况（单位：元）.
星 期 一 二 三 四 五
每股涨跌 ＋4 ＋4.5 －1 －2.5 －6
（1）星期三收盘时，每股是 元；
（2）本周内每股最高价 元，最低价 元；
（3）已知小李买进股票时付了1.5‰的手续费,卖出时还要付成交额1.5‰的手续费
和1‰的交易税,若小李在星期五收盘时全部卖出股票,则他的盈亏情况如何?
六、列方程解应用题（8分）
28、某鱼场的甲仓库存鱼30吨，乙仓库存鱼40吨，现要再往这两个仓库运
送80吨鱼，使甲仓库的存鱼量为乙仓库存鱼量的1.5倍。应往甲仓库和乙仓库分
别运送多少吨鱼?
一次函数测试卷
一、填空：（30分）
1、已知矩形的周长为24，设它的一边长为x，那么它的面积y与x之间的函数关系式为________________．__________是常量，变量有__________________。
2、计划花500元购买篮球，所能购买的总数n（个）与单价a（元）的函数关系式为__________________，其中____________是自变量，__________是因变量．
3、函数 中，自变量x的取值范围是__________________.函数y=15-x中自变量x的取值范围是
4、以下函数：①y=2x2+x+1 ②y=2πr ③y= ④y=( －1)x
⑤y=－(a+x)(a是常数)是一次函数的有________________．
5、直线y=3-9x与x轴的交点坐标为__________，与y轴的交点坐标为________．
6、若直线y=kx＋b平行直线y=3x＋4，且过点（1，-2），则k= .
7、已知一次函数y =（m + 4）x + m + 2（m为整数）的图象不经过第二象限，则m = ；
8、一次函数y = kx + b的图象经过点A（0，2），B（-1，0）若将该图象沿着y轴向上平移2个单位，则新图象所对应的函数解析式是 ；
9、弹簧挂上物体后会伸长，测得一弹簧的长度y（cm）与所挂物体的质量x（kg）有下列关系：
x 0 1 2 3 4 5 6 7 8
y 12 12.5 13 13.5 14 14.5 15 15.5 16
那么弹簧的总长y（cm）与所挂物体的质量x（kg）之间的函数关系式为 ；
二、选择(30分)
1、在同一直角坐标系中，对于函数：① y = – x – 1；② y = x + 1；③ y = – x +1；④y = – 2（x + 1）的图象，下列说法正确的是（ ）
A、通过点（– 1，0）的是①和③ B、交点在y轴上的是②和④
C、相互平行的是①和③ D、关于x轴对称的是②和③
2、已知函数y= ，当x=a时的函数值为1，则a的值为（ ）
A．3 B．-1 C．-3 D．1
3、函数y=kx的图象经过点P(3，-1)，则k的值为( )
A．3 B．-3 C． D．-
4、下列函数中，图象经过原点的为( )
A．y=5x+1 B．y=-5x-1 C．y=- D．y=
5、点A（– 5，y1）和B（– 2，y2）都在直线y = – 12 x上，则y1与y2的关系是（ ）
A、y1≤y2 B、y1＝y2 C、y1＜y2 D、y1＞y2
6、函数y = k（x – k）（k＜0＝的图象不经过（ ）
A、第一象限 B、第二象限 C、第三象限 D、第四象限
7、要从y= x的图像得到直线y= ，就要把直线y= x（ ）
（A）向上平移 个单位 （B）向下平移 个单位
（C）向上平移2个单位 （D）向下平移2个单位
8、一水池蓄水20 m3，打开阀门后每小时流出5 m3，放水后池内剩下的水的立方数Q (m3)与放水时间t(时)的函数关系用图表示为( )
9、已知一次函数y=kx+b,y随着x的增大而减小,且kb<0,则在直角坐标系内它的大致图象是( )
(A) (B) （C） （D）
10．星期天晚饭后，小红从家里出发去散步，图描述了她散步过程中离家s（米）与散步所用的时间t(分)之间的函数关系．依据图象，下面描述符合小红散步情景的是（ ）
(A) 从家出发,到了一个公共阅报栏,看了一会报后,就回家了.
(B)从家出发,一直散步(没有停留),然后回家了.
(C)从家出发,到了一个公共阅报栏,看了一会报后,
继续向前走了一会,然后回家了.
(D)从家出发,散了一会步,就找同学去了,18分钟后
才开始返回.
三、解答题：
1、一次函数y=kx＋b的图象过点（－2，3）和（1，－3）
① 求k与b的值;②判定（－1，1）是否在此直线上？
2．已知一次函数 的图像平行于 ，且过点（2，-1），求这个一次函数的解析式。并画出该一次函数的图象。
3、某市出租车5㎞内起步价为8元，以后每增加1㎞加价1元，请写出乘坐出租车路程x㎞与收费y元的函数关系，并画出图象，小明乘了10㎞付了多少钱，如果小亮付了15元钱乘了几千米？
4、北京某厂和上海某厂同时制成电子计算机若干台，北京厂可支援外地10台，上海厂可支援外地4台，现在决定给重庆8台，汉口6台。如果从北京运往汉口、重庆的运费分别是400元/台、800元/台，从上海运往汉口、重庆的运费分别是300元/台、500元/台。求：
（1）写出总运输费用与北京运往重庆x台之间的函数关系；
（2）若总运费为8400元，上海运往汉口应是多少台?
参考资料：http://zhidao.baidu.com/question/14908907.html?fr=qrl3
1949的2002次方 的末两位数是多少?
这个怎么好找啊
发神经
有病。。
绛旓細杈涘嫟鍋 涓冨勾绾ф暟瀛 缁冧範棰樼殑铚滆渹姘告病鏈夋椂闂寸殑鎮插搥銆備笅闈㈡槸鎴戜负澶у绮惧績鎺ㄨ崘鐨涓冨勾绾ф暟瀛︿笂鍐鏈夌悊鏁板姞鍑忔硶鐨勮绠楅,甯屾湜鑳藉瀵规偍鏈夋墍甯姪銆 涓冨勾绾ф暟瀛︿笂鍐屾湁鐞嗘暟鐨勫姞鍑忔硶璁＄畻棰樼洰 涓銆侀夋嫨棰(鍏13灏忛) 1.璁＄畻锕10锕8鎵寰楃殑缁撴灉鏄( ) A.锕2 B.2 C.18 D.锕18 2.(2014•鍝堝皵婊)鍝堝競鏌愬ぉ鐨勬渶楂樻皵...
绛旓細5銆佹煇鏍″叚骞寸骇鏈変袱涓彮锛涓婂鏈绾鏁板骞冲潎鎴愮哗鏄85鍒嗐傚凡鐭ュ叚锛1锛夌彮40浜猴紝骞冲潎鎴愮哗涓87.1鍒嗭紱鍏紙2锛夌彮鏈42浜猴紝骞冲潎鎴愮哗鏄灏戝垎锛熷钩鍧囨垚缁╂槸x鍒 40*87.1+42x=85*82 3484+42x=6970 42x=3486 x=83 骞冲潎鎴愮哗鏄83鍒 6銆佸鏍′拱鏉10绠辩矇绗旓紝鐢ㄥ幓250鐩掑悗锛岃繕鍓╀笅550鐩掞紝骞冲潎姣忕澶氬皯鐩...
绛旓細- 璇︾粏鐨勮拷鍔犲垎 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 30x-y=2940 绛旀锛歺=98 y=51 (5) 67x+54y=8546 71x-y=5680 绛旀锛歺=80 y=59 ...
绛旓細32+X锛56锛2X 3X锛24 绛擷锛8锛堜汉锛夎В锛氳涔欓熷害涓篨锛屽垯鐢蹭负5鍒嗕箣7X 0.5锛圶+5鍒嗕箣7X锛=1锛1琛ㄧず涓ゅ湴璺濈锛夋墍浠=6鍒嗕箣5 5鍒嗕箣7X=6鍒嗕箣7 鍐嶈鐢茶拷涓婁箼鏃堕棿涓篩 鍒6鍒嗕箣7Y-6鍒嗕箣5Y=1 鎵浠=3 鍗崇敳杩戒笂涔欑敤3灏忔椂 瑙ｏ細璁句箼闃熷師鏉ユ湁a浜猴紝鐢查槦鏈2a浜 閭ｄ箞鏍规嵁棰樻剰 ...
绛旓細闄勫姞棰 11.璁＄畻锛氭牳蹇冨涔犵郴鍒楋紙浜岋級1.鍦ㄦ湁鐞嗘暟涓,鏈澶х殑璐熸暣鏁版槸 ,鏈灏忕殑姝ｆ暣鏁版槸 ,鏈灏忕殑闈炶礋鏁存暟鏄 ,鏈澶х殑闈炴鏁存暟鏄 .2.鑻 .鐢ㄢ滐紴鈥濇垨鈥滐紲鈥濆彿濉┖锛-3 -4锛-锛-4锛 - 锛 .3.涓涓叧浜巄鐨勪簩娆′笁椤瑰紡鐨勪簩娆￠」绯绘暟鏄-2,涓娆￠」绯绘暟鏄-0.5,甯告暟椤规槸3,鍒欒繖涓椤瑰紡鏄痏__....
绛旓細2.8脳0.4锛 1.12 14锛7.4锛6.6, 1.92梅0.04锛48, 0.32脳500锛160, 0.65锛4.35锛 5 10锛5.4锛4.6, 4梅20锛0.2, 3.5脳200锛700, 1.5锛0.06锛1.44 0.75梅15锛0.05, 0.4脳0.8锛0.32, 4脳0.25锛1, 0.36锛1.54锛2 1.01脳99锛99.99, 420梅35锛12, ...
绛旓細鍒嗘瀽瀹為檯闂涓殑鏁伴噺鍏崇郴,鍒╃敤鍏朵腑鐨勭浉绛夊叧绯诲垪鍑烘柟绋,鏄敤鏁板瑙ｅ喅瀹為檯闂鐨勪竴绉嶆柟娉.缂栬緫鏈涓鍏冧竴娆℃柟绋嬬殑瀛︿範瀹炶返 鍦ㄥ皬瀛︿細瀛︿範杈冩祬鐨勪竴鍏冧竴娆℃柟绋,鍒颁簡鍒濅腑寮濮嬫繁鍏ョ殑浜嗚В涓鍏冧竴娆℃柟绋嬬殑瑙ｆ硶鍜屽埄鐢ㄤ竴鍏冧竴娆℃柟绋嬭В杈冮毦鐨勫簲鐢ㄩ 涓鍏冧竴娆℃柟绋嬪惈 宸ョ▼闂 绉嶆闂 鐩搁亣闂锛堣矾绋嬮棶棰橈級鐗涘悆鑽夐棶棰 ...
绛旓細涔欐瘡灏忔椂琛寈鍗冪背 3(45+x)+17=272 3(45+x)=255 45+x=85 x=40 涔欐瘡灏忔椂琛40鍗冪背 5銆佹煇鏍″叚骞寸骇鏈変袱涓彮锛涓婂鏈绾鏁板骞冲潎鎴愮哗鏄85鍒嗐傚凡鐭ュ叚锛1锛夌彮40浜猴紝骞冲潎鎴愮哗涓87.1鍒嗭紱鍏紙2锛夌彮鏈42浜猴紝骞冲潎鎴愮哗鏄灏戝垎锛 骞冲潎鎴愮哗鏄痻鍒 40*87.1+42x=85*82 3484+42x=6970 42x=3486...
绛旓細绁濅綘 涓冨勾绾ф暟瀛 鏈熸湯鑰冭瘯鍙栧緱濂芥垚缁,鏈熷緟浣犵殑鎴愬姛!鎴戞暣鐞嗕簡鍏充簬涓冨勾绾ф暟瀛︿笂鍐鏈熸湯璇曢浜烘暀鐗,甯屾湜瀵瑰ぇ瀹舵湁甯姪! 涓冨勾绾ф暟瀛︿笂鍐屾湡鏈瘯棰 涓銆侀夋嫨棰:姣忓皬棰3鍒,鍏20鍒 1.锕8鐨勭浉鍙嶆暟鏄( ) A.锕8 B.8 C. D. 2.涓嬪垪璁＄畻缁撴灉,閿欒鐨勬槸( ) A.(锕3)脳(锕4)脳(锕 )=锕3 B.(锕 )脳(锕8)...
绛旓細1. 3/7 脳 49/9 - 4/3 2. 8/9 脳 15/36 + 1/27 3. 12脳 5/6 鈥 2/9 脳3 4. 8脳 5/4 + 1/4 5. 6梅 3/8 鈥 3/8 梅6 6. 4/7 脳 5/9 + 3/7 脳 5/9 7. 5/2 -锛 3/2 + 4/5 锛8. 7/8 + 锛 1/8 + 1/9 锛9. 9 脳 5/6 + 5/6 10....
