题目内容

把下列百分数化成小数.
38%=
0.38
0.38
            
73%=
0.73
0.73
             
99%=
0.99
0.99
0.9%=
0.009
0.009
           
115%=
1.15
1.15
            
0.75%=
0.0075
0.0075
45%=
0.45
0.45
            
19%=
0.19
0.19
             
75%=
0.75
0.75
分析:把百分数化成小数时,只有把小数点向左移动两位,同时去掉百分号(%)即可.
解答:解:(1)38%=0.38;
(2)73%=0.73;
(3)99%=0.99;
(4)0.9%=0.009;
(5)115%=1.15;
(6)0.75%=0.0075;
(7)45%=0.45;
(8)19%=0.19;
(9)75%=0.75.
故答案为:0.38,0.73,0.99,0.009,1.15,0.0075,0.45,0.19,0.75.
点评:本题是考查分数化小数,属于基础知识.
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