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		<h1>ĐỀ THI MÔN TOÁN LỚP 7</h1>
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			<div style="text-align: center;"><span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="EN-GB" style="font-size:14.0pt"><span style="line-height:150%">ĐỀ THI MÔN TOÁN LỚP 7</span></span></b></span></span></span></div>
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><i><span lang="EN-GB" style="font-size:13.0pt"><span style="line-height:150%">Thời gian làm bài: 120 phút (không kể thời gian giao đề)</span></span></i></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">(Đề thi gồm có 01 trang)</span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;.VnTime&#039;,&#039;sans-serif&#039;">C©u1 (5 ®iÓm).</span></span></span></b></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;.VnTime&#039;,&#039;sans-serif&#039;">T×m c¸c sè x, y, z biÕt: </span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%"><span style="font-family:&#039;.VnTime&#039;,&#039;sans-serif&#039;">a. </span></span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image002.gif" style="width:83px; height:41px" /></span></span></span></span><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">&nbsp;và&nbsp; 5x+y-2z =28 </span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">b. 3x=2y; 7y=5z&nbsp; và&nbsp; x-y+z =32</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">c. </span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image004.gif" style="width:92px; height:41px" /></span></span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">Câu 2 (6 điểm).</span></span></b></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">1)Tìm x thỏa mãn một trong các điều kiện sau:</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">a)</span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:3.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image006.gif" style="width:95px; height:20px" /></span></span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">b)</span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image008.gif" style="width:123px; height:27px" /></span></span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt"><span style="line-height:150%">2) Chứng minh đa thức sau không có nghiệm</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:3.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" style="width:151px; height:20px" /></span></span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:14.0pt"><span style="line-height:150%">Câu 3 (2 điểm).</span></span></b></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt"><span style="line-height:150%">Tìm giá trị lớn nhất của biểu thức : &nbsp; A=</span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:15.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image012.gif" style="width:90px; height:45px" /></span></span></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">Câu 4 (7 điểm).</span></span></b></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1) Cho tam giác cân ABC, AB = AC. Trên tia đối của các tia BC và CB lấy theo thứ tự hai điểm D và E sao cho BD=CE</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a) Chứng minh tam giác ADE cân.</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) Gọi M là trung điểm của BC. Chứng minh AM là tia phân giác của góc DAE.</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span style="font-size:14.0pt"><span style="line-height:150%">c) Từ B và C kẻ BH</span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:2.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" style="width:16px; height:17px" /></span></span></span></span><span style="font-size:14.0pt"><span style="line-height:150%">AD; CK</span></span><span style="font-size:14.0pt"><span style="line-height:150%"><span style="position:relative"><span style="top:2.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" style="width:16px; height:17px" /></span></span></span></span><span style="font-size:14.0pt"><span style="line-height:150%">AE . Chứng minh BH = CK.</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt"><span style="line-height:150%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) Chứng minh AM;BH;CK gặp nhau tại một điểm</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">2) Cho tam giác ABC có AB = AC;&nbsp; góc A bằng 100<sup>0</sup>. Điểm M nằm trong tam giác ABC sao cho góc MBC bằng 10<sup>0</sup>; góc MCB bằng 20<sup>0</sup>. </span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">Tính số đo góc AMB.</span></span></span></span></span><br />
<span style="font-size:12pt"><span style="line-height:150%"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="PT-BR" style="font-size:14.0pt"><span style="line-height:150%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;---------------------------------------------------------------------------</span></span></span></span></span><br />
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