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2023-2024学年下学期期末学业水平调研测试
七年级数学参考答案与评分标准
一、选择题（本大题共10小题，每小题3分，共30分。每小题有四个选项，其中只有一个
是正确的）
题号12345678910
答案DBCABDCDAB
5315
二、填空题（本大题共小题，每小题分，共分）
−5120
11．1.21012．613．14．4015．8
三、解答题（本大题共7小题，共55分）
16．（共8分）
−2
1
20240
+（−−−
（1）1）(3π)；
2
解：原式=4+1-1···························································3分（每个结果给1分）
=4··························································································4分
（2）(2x+y)(x−y)．
解：原式2x2−2xy+xy−y2···································································7分
2x2−xy−y2··········································································8分
（说明：第一步骤中任意对一个给一分，直接得到答案也给满分．）
17．（共6分）
解：原式(x2−4xy+4y2+y2−x2)y·····················································2分
(5y2−4xy)y········································································3分
5y−4x；··············································································4分
将x-1，y=1代入，得
原式5×1-4×（-1）············································································5分
=9．·····························································································6分
（说明：代值部分要写出来，没写扣1分．）
18．（共6分）
1··································
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