人教版七年级数学上册有理数的乘方综合复习题80Word格式.docx
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(-4)
2、用科学记数法表示下列各数。
-5000000-600450000-379000000
-600004700000048000-20600000
3、下列用科学记数法写出的数,原来分别是什么数?
-4×
107-9×
106-1×
1071.13×
102
2.6×
1054.49×
103-8.7×
107-5.11×
103
4、对下列各数取近似数。
0.000782(精确到万分位)945.747(精确到个位)
0.235128(精确到0.001)0.00978(精确到0.1)
(-8)2(-4)3(-1)2(-13)2
3
(-—)2-(-6)3(-5)2×
(-1)2
4×
(-4)2+4×
(-8)+13(-2)2+(-7)-(-4)2÷
(-5)
(-1)3+(-3)+[(-1)3+2]-(-3)2÷
(-3)
(-—)2+4×
(-2)3(-1)5-[(-8)2-(4-12)÷
5]
191136
—×
(—-—)×
766195
(-1)3+(-3)÷
(-3)3÷
-80000005000000030000-3400000
150000270000008500-9650000000
-5×
103-8×
1051.7×
106-4.62×
105
8.3×
106-1.39×
107-3.7×
103-2.11×
0.000696(精确到万分位)981.329(精确到个位)
0.569405(精确到0.01)0.0918(精确到0.001)
(-2)3(-1)3(-5)2(-0.08)2
(-—)3-(-4)2(-9)2×
(-9)2
6×
(-1)3×
9×
(-9)-19(-2)3-(-3)×
(-2)2×
(-2)
(-3)3-(-3)-[(-1)2-8]-(-4)3×
(-—)3÷
(-2)3(-0.1)4-[(-9)2-(4+22)÷
2]
191121
224193
(-4)3+(-9)-(-4)2×
(-2)
190000001000003400-2460000000
-1900000-46000340000-87500000
-2×
1042×
102-7.9×
1082.2×
7×
104-5.46×
1051.3×
1028.17×
0.000987(精确到万分位)2.3015(精确到十分位)
0.210006(精确到0.01)0.0889(精确到0.01)
(-3)3(-5)4(-2)3(-1.3)2
(-—)3-(-9)2(-6)2×
(-3)2
2×
(-3)3×
5-(-7)-9(-1)3+(-4)-(-4)2×
(-4)
(-4)2+(-4)×
[(-1)2-8]+(-1)3÷
(-—)2-2×
(-3)3(-0.1)5+[(-5)2+(9-12)×
131194
953135
(-3)3-(-8)+(-4)2×
7006000000410000-32000
-170000004400000006200000-8120000
9×
102-2×
1084.2×
107-4×
-4.8×
102-7.97×
107-6.9×
108-7.79×
108
0.000847(精确到万分位)41075.3(精确到十分位)
0.394261(精确到0.1)0.0928(精确到0.1)
(-3)2(-3)3(-4)2(-0.14)2
(-—)2-(-10)2(-6)2×
(-4)2-3×
(-2)+13(-3)3-(-3)+(-1)2×
(-3)
(-3)3+(-2)-[(-2)2+4]-(-2)3÷
(-6)
(-—)2÷
(-2)2(-10)4-[(-9)2-(7-62)×
191151
435193
300-200032000000-18500000
-800-140000005600000-724000
106-7×
1039.9×
107-4.38×
1.6×
1058.63×
1049.4×
106-1.25×
0.000722(精确到万分位)5.84622(精确到十分位)
0.637815(精确到0.001)0.00905(精确到0.01)
(-7)2(-1)3(-1)4(-0.14)2
6
(-—)3-(-9)3(-7)2×
(-2)2
7
(-3)3+5+(-3)+2(-4)2-(-7)+(-2)2÷
(-1)3-(-2)×
[(-2)2+2]-(-2)2÷
(-—)3-6×
(-1)3(-10)3+[(-6)2+(9-32)÷
6]
131176
324135
(-3)2-(-7)+(-1)2×
-130000-900097000000-499000
900-1600001200000-1200000000
1×
1075×
1046.9×
108-2.04×
-7.3×
1069.94×
106-7.1×
105-6.5×
0.000755(精确到万分位)33.3963(精确到个位)
8.19977(精确到0.1)0.00743(精确到0.01)
(-7)3(-5)4(-3)3(-130)2
(-—)2-(-3)3(-5)2×
(-9)+1(-4)3+(-5)-(-3)2×
(-4)2-(-8)+[(-3)2-3]-(-3)3÷
(-—)2+6×
(-4)3(-0.1)4+[(-10)2+(5+42)×
171161
334172
(-3)2-(-3)÷
-9000007005900-696000
90000-26000000062000000-560000000
1059×
1087.9×
1042.12×
104
-2.7×
107-9.6×
1043.7×
104-7.24×
0.000534(精确到万分位)42.547(精确到个位)
0.676446(精确到0.01)0.0597(精确到0.001)
(-10)2(-4)2(-2)3(-9)2
(-—)3-(-1)3(-8)2×
(-6)2
(-2)3-3+(-6)+7(-1)2-(-7)÷
(-4)3÷
(-1)2-(-7)-[(-4)2+9]+(-3)2×
(-—)3×
(-1)3(-1)4-[(-5)2+(4-62)÷
191171
723192
(-3)2-(-5)÷
(-3)2÷
7000000-90009900000-5220000000
100000-100001400000-59300
-3×
1085×
1067.5×
103-6.07×
106
-6.2×
106-2.75×
1045.9×
104-4.93×
0.000524(精确到万分位)96866.1(精确到个位)
0.956871(精确到0.1)0.00554(精确到0.001)
(-3)3(-6)2(-2)2(-11)2
9
(-—)2-(-8)3(-1)2×
8
(-7)-13(-4)3-(-3)×
(-1)2÷
(-1)3-(-9)+[(-3)3+1]+(-4)3×
(-—)2-5×
(-3)3(-0.1)4-[(-1)2+(4-62)×
3]
111124
356113
(-3)3-(-7)+(-4)2÷
1500000-10000037000000-52900
1800-40000005600000-7330000
-8×
104-3×
1067.9×
1055.26×
7.3×
107-6.38×
108-7.4×
107-4.72×
0.000835(精确到万分位)8796.81(精确到十分位)
93.6907(精确到0.01)0.0577(精确到0.001)