七年级数学上册有理数的乘方35Word格式文档下载.docx
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732193
(-2)3+(-2)×
(-4)3÷
(-2)
2、用科学记数法表示下列各数。
1700000-9000006000000-74300
-8000000200009900-4480000
3、下列用科学记数法写出的数,原来分别是什么数?
-3×
107-2×
107-8.7×
108-2.38×
106
5.6×
102-4.52×
1055.7×
108-5.63×
104
4、对下列各数取近似数。
0.000669(精确到万分位)3147.92(精确到十分位)
0.406432(精确到0.1)0.0753(精确到0.001)
(-6)3(-5)3(-2)3(-0.6)2
(-—)2-(-7)3(-5)2×
(-5)2
4×
(-3)2-2-(-7)-18(-2)2-(-4)+(-4)3×
(-2)
(-4)3+(-5)×
[(-4)2-2]+(-4)3×
1
(-—)4-2×
(-2)2(-0.1)4-[(-2)2-(5-52)÷
5]
191191
(—-—)×
756194
(-2)2-(-5)÷
(-4)2×
(-4)
-130000-100065000000-1000000
-1300046000062000000-3270000
-2×
107-4×
1052.2×
1058.17×
105
-9.6×
1029.23×
103-6.3×
1033.7×
102
0.0000577(精确到万分位)6068.51(精确到十分位)
8.65773(精确到0.001)0.00926(精确到0.1)
(-10)3(-2)2(-2)4(-100)2
(-—)2-(-4)3(-7)2×
(-7)2
6×
(-2)3-8-(-2)+5(-3)3+(-4)×
(-1)2÷
(-6)
(-1)3-(-2)-[(-3)2+3]+(-3)3×
(-6)
(-—)3+6×
(-1)3(-10)5-[(-1)2-(8+22)÷
111161
263112
(-2)3+(-8)-(-1)3÷
14000-200099000-41900000
-1600180000039000000-50000000
9×
1066×
104-1.4×
1056.85×
103
-9.3×
1079.45×
1053.1×
1055.33×
0.00058(精确到万分位)8776(精确到个位)
4.06004(精确到0.1)0.00507(精确到0.001)
(-10)3(-4)2(-5)4(-0.5)2
(-—)3-(-7)3(-8)2×
(-1)2
6
5×
(-3)2+9×
(-9)+5(-2)3-(-9)×
(-1)2×
(-3)
(-2)3-(-7)×
[(-3)2+3]-(-2)2×
(-—)4×
(-4)2(-1)5+[(-3)2+(7-32)×
4]
111113
625112
(-3)2-(-7)×
(-5)
17000-2000000076000-137000000
4000200000000500000-5730000000
8×
104-8×
1061.3×
1025.11×
108
-2.2×
1083.01×
104-6.4×
105-3.65×
0.000541(精确到万分位)7.31649(精确到十分位)
5.02652(精确到0.1)0.0074(精确到0.001)
(-6)2(-5)2(-2)3(-1)2
(-—)2-(-3)2(-9)2×
(-4)2
(-4)3-2-(-4)-13(-2)3-(-5)-(-4)2×
(-5)
(-4)3+(-2)×
[(-1)3+2]-(-2)2×
(-—)3×
(-2)2(-0.01)5-[(-10)2-(3-12)×
6]
111174
833115
(-4)3-(-2)÷
(-3)2÷
-110000-9000006400-84200000
9000-500023000-27600
1×
1054×
1069.9×
1026.05×
-8.6×
1045.18×
108-1.1×
102-6.23×
0.0000913(精确到万分位)28.7197(精确到十分位)
94.3254(精确到0.001)0.0597(精确到0.01)
(-9)2(-4)4(-1)2(-0.07)2
(-—)2-(-10)3(-1)2×
(-3)2×
4-(-8)-3(-3)3-(-6)×
(-3)3+(-8)×
[(-4)3-2]+(-1)3÷
(-—)3÷
(-1)2(-10)5+[(-7)2+(9-52)×
111141
233115
(-1)3-(-6)+(-4)3×
-160050000690000-16400
-400340034000-123000000
-8×
1031×
102-9.7×
1073.54×
-9.8×
1085.81×
105-8.9×
1089×
0.000545(精确到万分位)9.07731(精确到十位)
0.797011(精确到0.1)0.0689(精确到0.01)
(-4)3(-5)4(-6)3(-20)2
(-—)3-(-8)2(-5)2×
(-4)3×
(-7)-9(-3)3-(-6)-(-4)3÷
(-2)3+(-9)×
[(-4)2-9]+(-4)2÷
(-—)2-2×
(-2)2(-0.01)5+[(-6)2-(1+52)÷
131171
426135
(-1)2+(-5)×
(-2)3÷
-11000003002900000-33000000
110000012000093000000-1160000000
6×
108-4×
1021.6×
1034.27×
7.6×
1043.34×
102-1.1×
107-7.97×
0.0000539(精确到万分位)26.8322(精确到十位)
0.791278(精确到0.01)0.0868(精确到0.001)
(-5)2(-4)2(-1)4(-80)2
(-—)3-(-9)2(-7)2×
(-8)2
(-2)2-2×
(-8)-20(-3)3-(-4)+(-2)2×
(-4)3-(-2)×
[(-3)2+7]+(-2)3×
(-2)2(-1)4+[(-5)2+(3-62)÷
191185
935194
(-1)2+(-9)÷
(-2)2×
11000500000057000-15100000
-150031004200-11000
1056×
107-5.3×
108-5.88×
6.5×
104-3.85×
1054.1×
102-2.02×
0.0000728(精确到万分位)4.85476(精确到个位)
0.897923(精确到0.1)0.00936(精确到0.001)
(-5)3(-1)2(-5)2(-14)2
(-—)2-(-3)3(-6)2×
(-3)3-7-(-5)+2(-1)3+(-2)÷
(-1)3×
(-1)2-(-6)-[(-1)2+6]+(-2)2×
(-—)2+4×
(-2)2(-0.01)5-[(-3)2+(7-42)×
191133
464194
(-3)2+(-8)+(-3)3×
-17000-20000450000-9200000000
5004800061000000-39600000
5×
106-6×
1087.5×
1041.24×
-3.6×
1084.91×
106-8.8×
106-6.88×
0.000067(精确到万分位)6.16837(精确到十位)
11.5742(精确到0.01)0.0072(精确到0.1)
(-9)3(-6)4(-4)3(-110)