题目内容

7.15×22=
157.3
157.3
;       
90.75÷3.3=
27.5
27.5
;  
3.68×0.25=
0.92
0.92
;      
16.9÷0.1
=130
=130
;     
1.55÷3.9=
0.40
0.40
;     
3.7×0.016=
0.0592
0.0592
;   
13.76×0.8=
11.008
11.008
;      
5.2×0.6=
3.12
3.12
;     
35.4×4.2=
148.68
148.68
;      
10.75÷12.5=
0.86
0.86
;    
0.042×0.54=
0.02268
0.02268
;    
10.75÷12.5=
0.86
0.86
分析:根据小数乘除法竖式计算的方法进行计算即可求出结果.
解答:解:7.15×22=157.3;

90.75÷3.3=27.5;

3.68×0.25=0.92;

16.9÷0.13=130;

1.55÷3.9≈0.40;

3.7×0.016=0.0592;

13.76×0.8=11.008;

5.2×0.6=3.12;

35.4×4.2=148.68;

10.75÷12.5=0.86;

0.042×0.54=0.02268;

10.75÷12.5=0.86;
点评:列竖式计算小数的乘除法,注意小数点的位置,对于除法,除不尽的要保留两位小数.
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