人教版七年级数学上册科学记数法和近似数综合练习题精选73文档格式.docx
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4×
103-3×
102-8.4×
1043.64×
107
7.7×
1079.52×
1071.5×
1022.59×
104
0.0000514(精确到万分位)8.36929(精确到十分位)
0.900338(精确到0.01)0.0785(精确到0.001)
1
(-—)3(-1)3(-1)443
3
-1800-9000009000000-6400000000
700000090001100-22000000
-7×
106-1×
108-6.1×
1031.92×
102
4.3×
102-3.12×
102-1.4×
107-6.22×
106
0.000883(精确到万分位)2.33246(精确到十位)
66.9682(精确到0.01)0.0542(精确到0.001)
(-—)3(-8)3(-1)242
2
190000006000031000000-2620000000
140000-34000270000-710000
2×
104-4×
102-3.4×
1062.16×
3.2×
1039.83×
108-1.6×
1056.24×
0.0000567(精确到万分位)1829.61(精确到十位)
36.5715(精确到0.01)0.00592(精确到0.1)
(-—)2(-9)3(-1)292
-10000000-700780000-25600
140000-3300000063000000-356000000
9×
104-7×
1046.6×
1036.19×
-2.8×
104-7.05×
1037×
102-3.26×
0.0000671(精确到万分位)666.214(精确到个位)
28.264(精确到0.01)0.00608(精确到0.01)
(-—)2(-9)3(-4)352
1700-20000026000000-9850000
-700000-1100000023000-1670000
-5×
1059×
1084.8×
1027.12×
105
-9×
1041.93×
1083.6×
102-6.77×
0.000081(精确到万分位)11644.7(精确到十分位)
0.925083(精确到0.01)0.00553(精确到0.1)
(-—)3(-6)3(-1)443
-1800-60000001600-7090000
160000-48008300-4310000000
6×
1049×
1024.9×
106-6.42×
-4.3×
106-1.98×
1076.4×
106-3.88×
0.00052(精确到万分位)85709(精确到十位)
6.27923(精确到0.01)0.0549(精确到0.01)
4
(-—)3(-3)2(-1)4102
1400000060084000-72800000
-100008000000490000-3770000
-6×
1041×
1075.5×
1077.71×
-3.7×
105-3.33×
1027.8×
1036.81×
0.000811(精确到万分位)2738.72(精确到个位)
0.641273(精确到0.1)0.00779(精确到0.01)
(-—)2(-5)2(-4)322
-8000000-500000009700000-727000
1700035000000075000000-7000
107-9×
108-3×
104-2.26×
6.7×
1063.39×
107-8.3×
1071.6×
0.0000798(精确到万分位)5612.93(精确到个位)
97.4816(精确到0.1)0.00903(精确到0.001)
(-—)3(-6)2(-2)263
-7007000003900-2240000000
-70000-280000005800000-73600
105-2×
1078.5×
1087.6×
-2.3×
1068.48×
1033.7×
1042.79×
0.0000922(精确到万分位)0.414153(精确到十分位)
0.904628(精确到0.001)0.00781(精确到0.001)
(-—)3(-4)2(-1)492
2000900700000-3530000000
100000048000200000-879000
1087×
104-2.7×
105-7.89×
7.9×
102-7.48×
1042.9×
1039.87×
0.0000959(精确到万分位)7.67829(精确到十位)
0.240423(精确到0.001)0.00847(精确到0.1)
(-—)2(-4)3(-4)253
-800400001000000-260000
-500000-220048000-6510000000
1×
1076×
1067.8×
102-3.3×
-8.9×
106-2.58×
1026.8×
1084.29×
0.000954(精确到万分位)86.7339(精确到十位)
84.5225(精确到0.01)0.00594(精确到0.1)
(-—)2(-8)3(-1)313
-16000000300000040000-9330000000
-15000000-1900022000000-5250000000
-3×
108-9×
103-5.8×
105-8.4×
-1.4×
1079.49×
1076.36×
0.0000562(精确到万分位)15.6859(精确到十位)
17.736(精确到0.01)0.00562(精确到0.001)
(-—)2(-4)3(-4)2102
-1500080000000320000-650000
1100004900001500-73200
105-3×
1022.9×
3.3×
105-7.85×
108-7.3×
1054.56×
0.0000892(精确到万分位)66.6228(精确到个位)
0.916963(精确到0.001)0.00567(精确到0.01)
(-—)3(-7)3(-2)432
3000-200070000000-74600000
-20005000000300000-9270000
102-1×
107-9.3×
1044.55×
9.2×
1038.51×
1069.59×
0.00086(精确到万分位)95001.3(精确到十分位)
97.4715(精确到0.01)0.00875(精确到0.01)
(-—)3(-10)3(-2)222
-11000-500000410000-65600000
-40000032000000100-53000000
7×
1032×
1041.3×
104-3.54×
7.6×
104-6.76×
1047.8×
103-6.07×
0.000838(精确到万分位)9.13946(精确到个位)
77.8067(精确到0.001)0.0917(精确到0.1)
(-—)2(-6)3(-4)473
17000000-70010000-810000000
800420003700-6820000
8×
1044×
1078.4×
1068.37×
5.3×
1056.42×
1044.9×
107-5.3×
0.000758(精确到万分位)0.840345(精确到个位)
84.8019(精确到0.001)0.0636(精确到0.001)
(-—)3(-8)3(-4)322
200000-600006800000-439000
-10000000-110074000000-924000000
1034×
1034.1×
108-1.7×
1061.95×
1029.9×
1043.34×
0.0000547(精确到万分位)0.297769(精确到十分位)
5.35667(精确到0.01)0.0807(精确到0.1)
(-—)2(-5)3(-1)373
-100000-50000057000000-3860000
200000004500000760000-5100000000
1042.6×
103-6.39×
-5.7×
103-8.97×
1052.2×
108-7.13×
0.000768(精确到万分位)2633.06(精确到个位)
16.4141(精确到0.01)0.0717(精确到0.001)
(-—)2(-8)3(-3)3