精英家教网 > 小学数学 > 题目详情
0.
?
3
+0.
?
4
+0.
?
5
+0.
?
6
+0.
?
7
+0.
?
8
分析:此题应把循环小数化为分数,分母为9,9的个数为循环节的位数,分子为小数点后面的数,据此解答.
解答:解:0.
?
3
+0.
?
4
+0.
?
5
+0.
?
6
+0.
?
7
+0.
?
8

=
3
9
+
4
9
+
5
9
+
6
9
+
7
9
+
8
9

=
(3+8)×6÷2
9

=
11
3
点评:掌握循环小数化为分数的方法,是解答此题的关键.
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