幂的乘方与积的乘方试题精选(五)
一.填空题(共30小题)
1.已知2m=a,则16m=_________.
2.(﹣2a2b3)4=_________;10m×102m×100=_________.
3.计算:=_________.
4.计算x4?x2=_________;(﹣3xy2)3=_________;0.1252011×82010=_________.
5.(﹣ab2)3=_________;若m?23=26,则m=_________.
6.若81x=312,则x=_________.
7.若3x=5,3y=2,则3x+2y为_________.
8.计算48×(0.25)8.
9.计算:0.1252013×(﹣8)2014=_________.
10.已知a x=﹣2,a y=3,则a3x+2y=_________.
11.(﹣3)2009×(﹣)2008=_________
12.若x2n=3,则x6n=_________.
13.计算:﹣x2?x3=_________;(﹣m2)3+(﹣m3)2=_________;=_________.
14.(﹣2xy3z2)3=_________
x m+n?x m﹣n=x10,则m=_________.
15.(﹣a)5?(﹣a)3?a2=_________.
16.(y﹣x)2n?(x﹣y)n﹣1(x﹣y)=_________.
17.(﹣2x2y)3﹣8(x2)2?(﹣x)2y3=_________.
18.(﹣0.25)2010×42010=_________,=_________.
19.若a、b互为倒数,则a2003×b2004=_________.
20.若162×83=2n,则n=_________.
21.已知:a2?a4+(a2)3=_________.
22.已知,则x=_________.
23.用科学记数法表示:(0.5×102)3×(8×106)2的结果是_________;0.000 00 529=_________.24.340_________430(填“>”“<”或“=”)
25.计算:的值是_________.
26.化简:y3?(y3)2﹣2?(y3)3=_________.
27.若644×83=2x,则x=_________.
28.计算:﹣x4?x2=_________,(﹣y3)2=_________.
29.[(﹣x)2]n?[﹣(x3)n]=_________.
30.计算:(﹣0.25)2006×42006=_________.
幂的乘方与积的乘方试题精选(五)
参考答案与试题解析
一.填空题(共30小题)
1.已知2m=a,则16m=a4.
2.(﹣2a2b3)4=16a8b12;10m×102m×100=103m+2.
3.计算:=9.
(﹣
)
(﹣
4.计算x4?x2=x6;(﹣3xy2)3=﹣27x3y6;0.1252011×82010=0.125.
5.(﹣ab2)3=﹣a3b6;若m?23=26,则m=8.
6.若81x=312,则x=3.
7.若3x=5,3y=2,则3x+2y为20.
8.计算48×(0.25)8.
9.计算:0.1252013×(﹣8)2014=8.
10.已知a x=﹣2,a y=3,则a3x+2y=﹣72.
11.(﹣3)2009×(﹣)2008=﹣3
(﹣
)
(﹣
12.若x2n=3,则x6n=27.
13.计算:﹣x2?x3=﹣x5;(﹣m2)3+(﹣m3)2=0;=2.根据同底数幂的乘法得出(﹣,根据积的乘方得出(﹣
)
)
×
14.(﹣2xy3z2)3=﹣8x3y9z6
x m+n?x m﹣n=x10,则m=5.
15.(﹣a)5?(﹣a)3?a2=a10.
16.(y﹣x)2n?(x﹣y)n﹣1(x﹣y)=(x﹣y)3n.
17.(﹣2x2y)3﹣8(x2)2?(﹣x)2y3=﹣16x6y3.
18.(﹣0.25)2010×42010=1,=1.
19.若a、b互为倒数,则a2003×b2004=b.
20.若162×83=2n,则n=17.
21.已知:a2?a4+(a2)3=2a6.
22.已知,则x=11.
)4
)
23.用科学记数法表示:(0.5×102)3×(8×106)2的结果是8×1018 ;0.000 00 529= 5.29×10﹣6 .
24.340>430(填“>”“<”或“=”)
25.计算:的值是2.
=
26.化简:y3?(y3)2﹣2?(y3)3=﹣y9.
27.若644×83=2x,则x=33.
28.计算:﹣x4?x2=﹣x6,(﹣y3)2=y6.
29.[(﹣x)2]n?[﹣(x3)n]=﹣x5n.
30.计算:(﹣0.25)2006×42006=1.