题目内容
把下面的分数化成小数:
0.4 0.4 ; |
0.875 0.875 ; |
2.25 2.25 ; | ||||||||||||||
0.1
0.1 ;
|
2.1 2.1 ; |
0.
0. .
|
分析:分数化小数时,用分子除以分母即可.
解答:解:(1)
=2÷5=0.4;
(2)
=7÷8=0.875;
(3)
=9÷4=2.25;
(4)
=1÷6=0.1
;
(5)
=21÷10=2.1;
(6)
=2÷3=0.
.
故答案为:0.4,0.875,2.25,0.1
,2.1,.0.
.
2 |
5 |
(2)
7 |
8 |
(3)
9 |
4 |
(4)
1 |
6 |
. |
6 |
(5)
21 |
10 |
(6)
2 |
3 |
. |
6 |
故答案为:0.4,0.875,2.25,0.1
. |
6 |
. |
6 |
点评:本题是考查分数化小数,属于基础知识,要掌握.
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