(1)4.075千米=4075米;
(2)875千克=0.875吨;
(3)5.8米=58分米;
(4)11厘米=1.1分米;
(5)1230克=1.23千克;
(6)0.5吨=500千克;
(7)3.3平方米=3平方米30平方分米;
故答案为:4075,0.875,58,1.1,1.23,500,3,30.
(1)4.075千米=4075米;
(2)875千克=0.875吨;
(3)5.8米=58分米;
(4)11厘米=1.1分米;
(5)1230克=1.23千克;
(6)0.5吨=500千克;
(7)3.3平方米=3平方米30平方分米;
故答案为:4075,0.875,58,1.1,1.23,500,3,30.