广西壮族自治区防城港市2022-2023学年七年级上学期期末质量检测数学试题

这是一份广西壮族自治区防城港市2022-2023学年七年级上学期期末质量检测数学试题，共7页。试卷主要包含了选择题，填空题，解答题等内容，欢迎下载使用。
  2022年秋季学期教学质量检测七年级数学参考答案 一、选择题（本大题共12小题，每小题3分，共36分）题号123456789101112答案BACCBDDBDBAD二、填空题（本大题共6小题，每小题3分，共18分）13．；  14．1；  15．两点之间，线段最短；  16．90；  17．崇；  18．2．三、解答题（本大题共66分）19．（本题满分6分）解：原式=··················································2分            =························································3分            = ·······················································5分            = ·······················································6分20．（本题满分6分）解：······················································2分······················································3分························································4分···················································5分···················································6分21．（本题满分6分）解:原式=·······················································2分      =··························································4分，:原式==····················································6分22．（本题满分8分）解:（1）···················································6分                          （2）略····················································8分 23．（本题满分8分）  解：（1）··················································2分···················································4分（2）  ····················································5分 ····················································6分  ···············································8分24．（本题满分10分）解：（1）,是中点···················································2分又点是线段中点．······················································4分······················································5分（3）设秒后甲、乙相遇····································6分   解得 ·················································9分答：3秒后甲、乙相遇·····································10分25．（本题满分10分）  （1）··················································3分（2）解：······················································4分又平分······················································5分又······················································7分（3）·················································10分   26.（本题满分12分）（1）2760元····················································3分（2）解：设甲班级有名学生准备参加演出，则可列方程为·················4分          ·························································6分解得·····················································7分（名）························································8分答：甲班级有52名学生准备参加演出，乙班级有40名学生准备参加演出.·······9分（3）解：两班联合购买91套服装的费用：（元）两班联合购买84套服装的费用：（元）甲、乙单独购买的总费用：（元）甲乙两班联合购买91套演出服装比其他购买方案更省钱. ................................12分