Toán lớp 7 - Sách kết nối tri thức - Đề kiểm tra 45 phút - Toán lớp 7 - Sách kết nối tri thức - Tháng 3 - Số 1

{"save":1,"level":1,"time":"45","total":25,"point":5,"segment":[{"id":"10368","test_id":"692","question":"<p>M\u1ed9t b&aacute;c n&ocirc;ng d&acirc;n s\u1eed d\u1ee5ng hai chi\u1ebfc m&aacute;y b\u01a1m \u0111\u1ec3 t\u01b0\u1edbi n\u01b0\u1edbc cho ru\u1ed9ng. M&aacute;y b\u01a1m th\u1ee9 nh\u1ea5t m\u1ed7i gi\u1edd b\u01a1m \u0111\u01b0\u1ee3c 5,5 m&sup3; n\u01b0\u1edbc. M&aacute;y b\u01a1m th\u1ee9 hai m\u1ed7i gi\u1edd b\u01a1m \u0111\u01b0\u1ee3c 3 m&sup3; n\u01b0\u1edbc. Vi\u1ebft bi\u1ec3u th\u1ee9c \u0111\u1ea1i s\u1ed1 bi\u1ec3u th\u1ecb l\u01b0\u1ee3ng n\u01b0\u1edbc b\u01a1m \u0111\u01b0\u1ee3c c\u1ee7a c\u1ea3 hai m&aacute;y, n\u1ebfu m&aacute;y b\u01a1m th\u1ee9 nh\u1ea5t ch\u1ea1y trong x gi\u1edd, m&aacute;y b\u01a1m th\u1ee9 hai ch\u1ea1y trong y gi\u1edd.<\/p>","options":["<strong>A.<\/strong>&nbsp;3x + 5,5y (m&sup3;).","<strong>B.<\/strong>&nbsp;8,5(x + y) (m&sup3;).","<strong>C.<\/strong>&nbsp;5,5x + 3y (m&sup3;).","<strong>D.<\/strong>&nbsp;5,5x &ndash; 3y (m&sup3;)."],"correct":"3","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;5,5x + 3y (m&sup3;).<\/span><\/p><p>L\u01b0\u1ee3ng n\u01b0\u1edbc b\u01a1m \u0111\u01b0\u1ee3c c\u1ee7a m&aacute;y b\u01a1m th\u1ee9 nh\u1ea5t khi ch\u1ea1y trong x gi\u1edd l&agrave; 5,5x (m&sup3;).<\/p><p>L\u01b0\u1ee3ng n\u01b0\u1edbc b\u01a1m \u0111\u01b0\u1ee3c c\u1ee7a m&aacute;y b\u01a1m th\u1ee9 hai khi ch\u1ea1y trong y gi\u1edd l&agrave; 3y (m&sup3;).<\/p><p>L\u01b0\u1ee3ng n\u01b0\u1edbc b\u01a1m \u0111\u01b0\u1ee3c c\u1ee7a c\u1ea3 hai m&aacute;y b\u01a1m l&agrave; 5,5x + 3y (m&sup3;).<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-04 07:57:08"},{"id":"10369","test_id":"692","question":"<p>Th\u1ef1c hi\u1ec7n ph&eacute;p chia \u0111a th\u1ee9c&nbsp;<span class=\"math-tex\">$(-5x^6+6x^5-4x^4+3x^3+2x):(-2x)$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{2}x^5+3x^4+2x^3+\\dfrac{3}{2}x^2+1$<\/span>.","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{2}x^5-3x^4+2x^3-\\dfrac{3}{2}x^2-1$<\/span>.","<strong>C.<\/strong> <span class=\"math-tex\">$-\\dfrac{5}{2}x^5-3x^4+2x^3+\\dfrac{3}{2}x^2+1$<\/span>.","<strong>D.<\/strong> <span class=\"math-tex\">$-\\dfrac{5}{2}x^5+3x^4-2x^3-\\dfrac{3}{2}x^2-1$<\/span>."],"correct":"2","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{2}x^5-3x^4+2x^3-\\dfrac{3}{2}x^2-1$<\/span>.<\/span><\/p><p><span class=\"math-tex\">$(-5x^6+6x^5-4x^4+3x^3+2x):(-2x)$<\/span><\/p><p><span class=\"math-tex\">$=(-5x^6):(-2x)+6x^5:(-2x)+(-4x^4):(-2x)+3x^3:(-2x)+2x:(-2x)$<\/span><\/p><p><span class=\"math-tex\">$=\\dfrac{5}{2}x^5-3x^4+2x^3-\\dfrac{3}{2}x^2-1$<\/span><\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-04 08:00:25"}]}