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20km2=hm2.4.08hm2=㎡.0.003km2=㎡.1800dm2=cm2.

编辑:chaxungu时间:2026-04-27 13:07:04分类:小学数学题库

20km2=( )hm2,4.08hm2=( )㎡,0.003km2=( )㎡,1800dm2=( )cm2。2000,40800,3000,180000