初一数学上册科学计数法和近似数146文档格式.docx
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初一数学上册科学计数法和近似数146文档格式.docx
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103-5×
104-7.6×
1061.41×
-2.1×
1068.39×
1079.1×
104-2.98×
102
0.0000786(精确到万分位)0.689865(精确到个位)
36.2787(精确到0.001)0.0502(精确到0.01)
5
(-—)3(-4)2(-2)233
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-1×
103-9×
1055.6×
108-8.43×
103
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1043.35×
108-8.2×
105-3.85×
0.000786(精确到万分位)92.921(精确到个位)
21.8798(精确到0.001)0.0801(精确到0.01)
6
(-—)3(-2)2(-4)272
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8×
102-5×
1048×
1061.01×
4.9×
103-2.02×
1065.5×
1053.1×
108
0.00009(精确到万分位)9159.43(精确到十分位)
0.143091(精确到0.1)0.00749(精确到0.01)
(-—)2(-6)3(-4)243
-7000-70000006500-24000
1500000019000003000-30000000
6×
1082×
1031.8×
104-7.11×
105
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102-1.57×
108-9.2×
104-5.59×
0.000756(精确到万分位)19.933(精确到十位)
8.80415(精确到0.1)0.00865(精确到0.001)
1
(-—)3(-2)3(-2)462
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2×
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1039.4×
1041.8×
102-4.59×
0.0000927(精确到万分位)70.0762(精确到个位)
88.074(精确到0.1)0.00723(精确到0.01)
(-—)3(-4)3(-3)312
2
-11001004000-70900000
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107-2.9×
103-3.74×
104
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1086.91×
106-1.5×
1034.66×
0.0000925(精确到万分位)9161.85(精确到十分位)
19.3876(精确到0.1)0.0703(精确到0.01)
(-—)2(-6)3(-2)2103
-9000-90000490000-3090000
300-260000044000-2730000
3×
1071×
108-4.7×
1057.32×
-7.4×
1078.35×
1063.4×
104-4.32×
0.000848(精确到万分位)602.41(精确到十分位)
14.61(精确到0.1)0.00798(精确到0.1)
(-—)3(-10)2(-3)352
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104-9×
1074.9×
1086.5×
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106-3.68×
1089.7×
1045.12×
0.0000958(精确到万分位)327.352(精确到个位)
72.2622(精确到0.01)0.0671(精确到0.1)
(-—)3(-5)2(-2)223
12000008000002800000-7400000000
80000-2100010000000-81700000
-6×
1065×
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1076.94×
4.4×
1073.09×
1087.1×
106-9.41×
0.0000544(精确到万分位)6.42021(精确到十分位)
76.7711(精确到0.001)0.0763(精确到0.01)
(-—)2(-9)2(-2)332
20060000000340000-520000
1200038000009700-820000
107-1×
107-1.6×
108-6.18×
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105-4.78×
104-4.7×
0.0000694(精确到万分位)1.33628(精确到十位)
0.658325(精确到0.001)0.00592(精确到0.01)
(-—)3(-2)2(-1)4103
900-70000007500-745000000
3000-2200300000-78000
1051×
1059.1×
1068.08×
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105-2.11×
1038.4×
1067.14×
0.0000834(精确到万分位)95954.1(精确到十分位)
25.0069(精确到0.1)0.0556(精确到0.001)
(-—)2(-7)3(-2)2102
-140008000006400-7350000000
12000002900035000-55300
-5×
107-6×
105-9×
102-1.55×
4.3×
1039.78×
107-8.1×
106-6.74×
0.000667(精确到万分位)2.89859(精确到十位)
73.7652(精确到0.01)0.00528(精确到0.1)
(-—)2(-3)2(-2)423
50000-7000046000-2000
-100000038000200000-449000000
102-8×
1083×
104-4.69×
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1088.37×
108-7.7×
108-9.78×
0.0000583(精确到万分位)25.4488(精确到个位)
39.3904(精确到0.01)0.00518(精确到0.01)
(-—)3(-10)2(-3)243
400000400000006000000-626000000
-2000025000049000000-29000
1062×
1072.8×
1024.56×
-9.8×
107-6.34×
103-2.3×
1032.7×
0.0000508(精确到万分位)33365.5(精确到十位)
5.15806(精确到0.01)0.0852(精确到0.001)
(-—)3(-2)2(-4)4103
-800000080000056000-19100
7000440000860000-6200
103-1×
1042.2×
102-5.46×
8.1×
1024.95×
106-8.9×
1033.35×
0.000904(精确到万分位)0.94724(精确到个位)
5.45737(精确到0.01)0.00513(精确到0.1)
(-—)3(-3)2(-2)392
9000400000004000-60000
-160004700000005300000-38900
1×
1061×
1049.3×
1049.29×
9.3×
105-8.3×
103-9.2×
106-9.87×
0.0000814(精确到万分位)4770.17(精确到十分位)
28.7103(精确到0.01)0.00776(精确到0.1)
-5000000-1000010000000-80800
-170000-270000008500-565000
-3×
108-8×
1032.96×
7.1×
107-4.11×
108-5.4×
1072.27×
0.0000533(精确到万分位)79413.7(精确到个位)
82.458(精确到0.1)0.0557(精确到0.01)
(-—)3(-7)2(-3)273
-100-50000002800000-1000
-200000041000023000000-774000000
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107-9.63×
105-3.4×
1024.92×
0.0000577(精确到万分位)9217.87(精确到个位)
0.755003(精确到0.001)0.0552(精确到0.01)
(-—)2(-2)2(-2)3103
-900000-800068
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