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110Word下载.docx
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108-5.7×
108-9.95×
106
9.4×
1034.45×
102-1.4×
108-6.72×
0.000742(精确到万分位)19806.7(精确到十位)
0.850215(精确到0.1)0.0652(精确到0.1)
4
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180007000000098000-565000
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8×
1051×
104-1.6×
1035.42×
103
1085.93×
1046×
105-5.56×
0.0000778(精确到万分位)760.017(精确到十位)
3.78072(精确到0.1)0.0731(精确到0.1)
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-10000005000071000-1420000
200000008009800000-6240000000
4×
1021×
108-9.9×
1067.58×
107
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108-4.6×
102-6.5×
1055.37×
108
0.000774(精确到万分位)11.0929(精确到个位)
1.88825(精确到0.1)0.0978(精确到0.001)
(-—)2(-8)3(-2)243
100002000044000-14700
100000290006800-8040000000
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1071×
105-6×
106-7.87×
5.6×
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104-9.4×
102-3.55×
0.0000706(精确到万分位)94092.6(精确到十位)
9.12976(精确到0.001)0.0927(精确到0.01)
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180000-800000039000000-361000000
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108-5.11×
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1041.03×
106-2.7×
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0.0000988(精确到万分位)80675.3(精确到个位)
9.33622(精确到0.1)0.0731(精确到0.01)
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70000-31000000010000-357000
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106-4.5×
103-5.68×
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102-3.22×
0.0000591(精确到万分位)2.33198(精确到十位)
5.91925(精确到0.01)0.0865(精确到0.01)
(-—)2(-8)3(-2)233
2
1100002000660000-40700
900-140002600-3690000000
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106-6.3×
107-8.97×
104
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106-5.58×
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107-6.19×
0.000705(精确到万分位)186.987(精确到十分位)
0.151686(精确到0.001)0.00951(精确到0.1)
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50000900000210000-59100
-19000000-480000680000-9220000
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103-2×
106-2.5×
103-8.83×
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103-2.37×
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108-8.85×
0.000992(精确到万分位)0.936791(精确到十分位)
65.8842(精确到0.1)0.00671(精确到0.001)
(-—)2(-6)2(-3)382
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-120000-38000098000000-8040000
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107-1×
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102-3.29×
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103-9.8×
107-5×
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0.0007(精确到万分位)59.2755(精确到十位)
5.69704(精确到0.1)0.00562(精确到0.1)
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-5000045007800-843000
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108-1.2×
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1038.61×
108-9.6×
1039.73×
0.000095(精确到万分位)0.697019(精确到十分位)
37.339(精确到0.01)0.0089(精确到0.1)
(-—)2(-10)3(-1)262
3000-7007400-7230000
5006000002400000-5870000000
105-1×
1059×
108-7.67×
105
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1051.05×
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103-6.39×
0.000812(精确到万分位)459.171(精确到十位)
0.45798(精确到0.1)0.00866(精确到0.001)
(-—)2(-9)3(-2)483
5
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9000-2000003500-612000000
104-7×
1034.4×
1041.46×
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1063.36×
103-4.3×
1023.93×
0.0000986(精确到万分位)0.21556(精确到十位)
32.8064(精确到0.1)0.0858(精确到0.01)
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7000800007700-5010000
-4000250000067000-602000000
6×
1038×
107-3×
1035.58×
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104-2.95×
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1075.18×
0.000702(精确到万分位)22850.5(精确到个位)
48.7651(精确到0.1)0.00591(精确到0.01)
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-100000-2500000044000000-2060000
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104-8.97×
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104-8.2×
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0.0000714(精确到万分位)31181.6(精确到十位)
0.51066(精确到0.1)0.0913(精确到0.1)
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60000070000044000-474000000
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1065×
1083.9×
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103-1.3×
107-1.3×
103-9.43×
0.000871(精确到万分位)0.258333(精确到十分位)
0.113097(精确到0.1)0.0734(精确到0.01)
(-—)2(-8)3(-4)312
-14000010003600000-21900000
-160008000089000-432000000
104-3×
1046.9×
104-2.48×
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1069.09×
1051.6×
1086.47×
0.000735(精确到万分位)16.7271(精确到十位)
92.9534(精确到0.001)0.097(精确到0.1)
(-—)2(-5)3(-3)453
17000200000900000-94600000
4000-33000000039000-100000000
106-1×
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103-7.38×
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1022.6×
1056.85×
0.000648(精确到万分位)7767.76(精确到十分位)
75.2921(精确到0.01)0.00698(精确到0.01)
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-200000-200008800-658000
107-2×
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107-9.86×
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1051.62×
0.000891(精确到万分位)1445.54(精确到十分位)
86.8391(精确到0.001)0.0055(精确到0.001)
(-—)2(-2)3(-2)442