按规律填数:100%,0.9,_ (百分数),_ (分数),_(小数),_ (成数).

问题描述:

按规律填数:100%,0.9,______ (百分数),______ (分数),______(小数),______ (成数).

0.9-0.1=0.8=80%;
0.8-0.1=0.7=

7
10

0.7-0.1=0.6;
0.6-0.1=0.5=50%,也就是五成.
故答案为:80%,
7
10
,0.6,五成.