20km2=______hm2;4.8hm2=______m2;0.003km2=______m2;3900cm2=______m2.-数学

题目简介

20km2=______hm2;4.8hm2=______m2;0.003km2=______m2;3900cm2=______m2.-数学

题目详情

20km2=______hm2 ;4.8hm2=______m2 ;0.003km2=______m2 ;3900cm2=______m2
题型:填空题难度:中档来源:不详

答案

(1)20km2=2000hm2 ;
(2)4.8hm2=48000m2;
(3)0.003km2=3000m2;
(4)3900cm2=0.39m2.
故答案为:2000,48000,3000,0.39.

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