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> 估计的值在()1到2之间(B)2到3之间3到4之间(D)4到5之间-八年级数学
估计的值在()1到2之间(B)2到3之间3到4之间(D)4到5之间-八年级数学
题目简介
估计的值在()1到2之间(B)2到3之间3到4之间(D)4到5之间-八年级数学
题目详情
估计
的值在 ( )
1到2之间 (B)2到3之间
3到4之间 (D)4到5之间
题型:单选题
难度:偏易
来源:不详
答案
D
分析:用“夹逼法”找到
在哪两个可化为整数的二次根式之间即可.
解答:解:∵
<
<
,
∴4<
<5,
故选D.
点评:考查估算无理数大小的知识;用“夹逼法”估算无理数是常用的估算无理数的方法.
上一篇 :
比较大小,在横线上填上“>、=、<
下一篇 :
下列判断正确的是A.<<2B.2<+<3C.1<一<2D
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题目简介
估计的值在()1到2之间(B)2到3之间3到4之间(D)4到5之间-八年级数学
题目详情
1到2之间 (B)2到3之间
3到4之间 (D)4到5之间
答案
解答:解:∵
∴4<
故选D.
点评:考查估算无理数大小的知识;用“夹逼法”估算无理数是常用的估算无理数的方法.