问题
填空题
用“>”或“<”填空: (1)-32______(-2)3; (2)|-3|3______(-3)2; (3)(-0.2)2______(-0.2)4; (4)(
|
答案
(1)-32=-9,(-2)3=-8,
∵-9<-8,
∴-32<(-2)3;
(2)|-3|3=27,(-3)2=9,
∵27>9,
∴|-3|3>(-3)2;
(3)(-0.2)2=0.04,(-0.2)4=0.0016,
∵0.04>0.0016,
∴(-0.2)2>(-0.2)4;
(4)(
)2=1 2
,(1 4
)2=1 3
,1 9
∵
>1 4
,1 9
∴(
)2>(1 2
)2.1 3
故答案为:<,>,>,>.