七年级数学上册有理数的乘方100Word格式.docx
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七年级数学上册有理数的乘方100Word格式.docx
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(-3)3-(-2)×
(-1)2×
(-4)
2、用科学记数法表示下列各数。
-40000060041000-443000
4000000-34000046000-42800
3、下列用科学记数法写出的数,原来分别是什么数?
-8×
1057×
1026.9×
1061.17×
107
-5.8×
103-1.47×
105-5.5×
1073.02×
103
4、对下列各数取近似数。
0.000974(精确到万分位)48556.5(精确到十位)
0.298856(精确到0.01)0.0912(精确到0.1)
(-5)2(-4)2(-5)2(-12)2
(-—)3-(-8)3(-5)2×
(-9)2
5×
(-3)3-4×
(-8)+9(-3)3+(-3)+(-1)2÷
(-3)
(-3)2+(-8)+[(-3)2-9]+(-1)2×
(-—)3-2×
(-2)3(-10)4+[(-7)2-(4-32)×
3]
3
131131
(—-—)×
252134
(-4)2+(-7)-(-4)2×
(-2)
-4007000036000-9580000
15003900009000-112000000
107-8×
107-1.3×
1061.07×
106
-8.5×
1043.12×
1086.4×
1031.83×
0.000528(精确到万分位)29179.2(精确到个位)
8.21508(精确到0.01)0.00953(精确到0.01)
(-3)3(-6)2(-3)4(-120)2
(-—)2-(-5)2(-4)2×
(-6)2
3×
(-2)2×
4×
(-5)+3(-4)2+(-8)+(-2)2×
(-1)2+(-9)+[(-3)3+3]-(-1)2×
(-5)
(-—)4×
2×
(-3)3(-1)3-[(-8)2-(4+42)÷
2]
171194
663173
(-2)3+(-9)×
(-1)2÷
-170000002006200000-3560000000
-50034000001900-499000
3×
104-2×
103-2.2×
1078.47×
105
5.5×
1029.45×
102-7.6×
1034.36×
108
0.000905(精确到万分位)181.277(精确到个位)
55.0427(精确到0.01)0.0802(精确到0.01)
(-6)3(-6)3(-6)4(-0.06)2
8
(-—)3-(-4)2(-8)2×
(-1)2+9+(-7)-12(-1)2+(-9)-(-2)3×
(-2)2+(-9)+[(-1)2+3]-(-1)3÷
(-3)
(-—)3×
(-2)2(-1)3+[(-7)2+(2-52)×
171172
246173
(-3)3+(-8)+(-3)2×
2000000-500570000-77300000
20000-2000000016000-2700000000
-4×
104-5×
1067.3×
102-8.17×
9.8×
1074.29×
1073.2×
108-4.59×
104
0.0000639(精确到万分位)0.143402(精确到十分位)
2.5112(精确到0.001)0.00701(精确到0.001)
(-9)2(-4)2(-3)4(-0.2)2
(-—)2-(-7)3(-7)2×
(-3)2×
(-5)-13(-3)3-(-9)-(-4)3÷
(-5)
(-3)2-(-4)×
[(-1)2-2]-(-2)2×
4
(-4)3(-0.1)2+[(-5)2+(4+32)×
171196
624175
(-1)2-(-2)÷
-2000-4000000390000-24100
2000-120000040000000-97500000
-9×
104-3×
1044.4×
104-7.15×
-7.9×
1021.67×
104-6×
107-6.11×
102
0.000986(精确到万分位)27.5187(精确到十位)
5.88598(精确到0.01)0.00914(精确到0.01)
(-5)3(-1)2(-6)3(-9)2
(-—)2-(-9)2(-6)2×
(-2)2
(-1)2-7×
(-2)-7(-2)3+(-5)-(-2)3×
(-4)
(-1)2-(-3)+[(-2)3+8]-(-2)2×
(-—)2-4×
(-1)2(-1)3-[(-3)2-(4-62)÷
191111
725192
(-3)3-(-5)-(-2)3÷
1200000090004200-499000
30000-90000480000-4820000000
-3×
1065.7×
1077.65×
-5.5×
1048.07×
105-9.3×
1046.63×
0.0000685(精确到万分位)4523.22(精确到十分位)
0.206455(精确到0.001)0.0545(精确到0.001)
(-3)3(-3)4(-2)4(-10)2
9
(-—)3-(-6)2(-6)2×
(-4)2-4+(-7)+10(-3)2-(-4)÷
(-4)3+(-6)+[(-3)2+9]-(-3)3÷
(-—)2÷
(-4)3(-0.01)4+[(-5)2-(9-52)÷
5]
171141
—×
322172
(-3)3-(-4)-(-2)2×
-500-500069000-387000
2000000-10003400-24300
108-3×
1056.3×
1078.1×
5.2×
105-2.31×
1048.9×
104-8.37×
0.00055(精确到万分位)5.5766(精确到十位)
6.0497(精确到0.01)0.00909(精确到0.01)
(-5)2(-6)2(-6)4(-0.11)2
(-—)3-(-1)2(-8)2×
(-7)2
(-2)2+7×
(-7)+1(-1)2+(-2)÷
(-4)3×
(-2)3+(-8)×
[(-2)3-7]+(-4)3÷
(-—)4+6×
(-2)2(-0.1)2+[(-5)2+(4+52)×
131141
344132
(-3)2+(-5)-(-2)2×
-9000-4009700-1870000
20000029000001400000-7060000
1084×
104-5.3×
103-8.3×
-5.1×
1032.45×
1047.7×
102-1.72×
0.00096(精确到万分位)6.88882(精确到十分位)
0.627551(精确到0.001)0.0588(精确到0.01)
(-7)3(-2)2(-2)3(-0.04)2
(-—)2-(-2)3(-10)2×
3-(-3)-7(-1)2-(-5)×
(-4)3-(-6)+[(-2)2+3]+(-3)3×
(-—)4-6×
(-3)2(-0.01)5+[(-1)2-(5+32)÷
171131
354172
(-4)3-(-3)×
(-4)3÷
-1400-60000027000000-4990000
-150009000027000000-9590000000
5×
107-3×
1067.8×
1049.82×
7.5×
105-3.49×
103-7.4×
108-2.59×
0.0000748(精确到万分位)78396.6(精确到个位)
5.80272(精确到0.1)0.00609(精确到0.001)
(-10)3(-5)2(-2)3(-1.4)2
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