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1、八年级上学期期中考试数学备考八年级上学期期中考试数学备考(北师版北师版)备考练备考练习习试卷简介:本试卷适用于期中考试前对八年级上册课本教材的复习和巩固，共5道题。 一、单选题一、单选题(共共 5 道，每道道，每道 20 分分) 1.下列计算错误的是（ ）A.B.C. D.2.如图，矩形纸片 ABCD 中，AD=9，AB=3，将其折叠，使点 D 与点 B 重合，折痕为 EF，那 么多边形 AB CFE 的面积是( )A.13.5 B.18 C.19.5 D.273.如图，在菱形 ABCD 中，AEBC 于点 E，AFCD 于点 F，且 EF 分别为 BC，CD 的中点， 则EAF 等于()A.
2、75 B.45 C.60 D.304.下列命题中，正确命题是() A.两条对角线相等的四边形是平行四边形； B.两条对角线相等且互相垂直的四边形是矩形； C.两条对角线互相垂直平分的四边形是菱形； D.两条对角线平分且相等的四边形是正方形；5.在下列各数中是无理数的有（）0.333, 3, 3.1415, 2.(相邻两个 1 之间有 1 个 0),76.(小数部分由相继的正整数组成). A.6 个 B.5 个 C.4 个 D.3 个内部资料 仅供参考*Jg&6a*CZ7H$dq8KqqfHVZFedswSyXTy#&QA9wkxFyeQ!djs#XuyUP2kNXpRWXmA&UE9aQGn8
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