1.零点八等于几分之几
0.8=8/10=4/5
2.零点一四五等于几分之几
0.145=145/1000=29/200
3.二点零二五等于几分之几
2.025=2025/1000=405/200=81/40
4.零点零零六等于几分之几
0.006=6/1000=3/500