题目内容
不计算,直接在横线里填上>、<或=.
0.175÷0.25×4
0.448÷32×0.9
0.23÷5÷0.4
(3.2+0.12)÷0.8
(7.8+2.2)÷0.25
0.175÷0.25×4
>
>
0.175÷(0.25×4)0.448÷32×0.9
=
=
0.448×0.9÷320.23÷5÷0.4
>
>
0.23÷(5×0.5)(3.2+0.12)÷0.8
>
>
3.2÷0.8(7.8+2.2)÷0.25
>
>
4.1÷0.25+5.8÷0.25.分析:(1)根据除法的性质进行解答,被除数不变时,除数越大,商越小;
(2)根据乘除法的计算方法,0.448÷32×0.9可以化成0.448×
×0.9,0.448×0.9÷32可以化成0.448×0.9×
,所以结果相等;
(3)根据除法的性质进行解答,0.23÷5÷0.4=0.23÷(5×0.5),被除数不变时,除数越大,商越小;
(4)除数不变时,被除数越大,商越大;
(5)算式4.1÷0.25+5.8÷0.25化成(4.1+5.8)÷0.25,除数不变时,被除数越大,商就越大,据此即可解答问题.
(2)根据乘除法的计算方法,0.448÷32×0.9可以化成0.448×
1 |
32 |
1 |
32 |
(3)根据除法的性质进行解答,0.23÷5÷0.4=0.23÷(5×0.5),被除数不变时,除数越大,商越小;
(4)除数不变时,被除数越大,商越大;
(5)算式4.1÷0.25+5.8÷0.25化成(4.1+5.8)÷0.25,除数不变时,被除数越大,商就越大,据此即可解答问题.
解答:解:(1)0.175÷0.25×4>0.175÷(0.25×4);
(2)0.448÷32×0.9=0.448×0.9÷32;
(3)0.23÷5÷0.4>0.23÷(5×0.5);
(4)(3.2+0.12)÷0.8>3.2÷0.8;
(5)(7.8+2.2)÷0.25>4.1÷0.25+5.8÷0.25.
故答案为:>,=,>,>,>.
(2)0.448÷32×0.9=0.448×0.9÷32;
(3)0.23÷5÷0.4>0.23÷(5×0.5);
(4)(3.2+0.12)÷0.8>3.2÷0.8;
(5)(7.8+2.2)÷0.25>4.1÷0.25+5.8÷0.25.
故答案为:>,=,>,>,>.
点评:做这类题目时,要注意平常计算中的经验积累和一些运算性质,灵活应用即可比较大小.
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