Toán lớp 7 - Sách kết nối tri thức - Đề kiểm tra 45 phút - Toán lớp 7 - Sách kết nối tri thức - Tháng 4 - Số 1

{"save":1,"level":1,"time":"45","total":25,"point":5,"segment":[{"id":"10343","test_id":"695","question":"<p>Tung m\u1ed9t con x&uacute;c x\u1eafc c&acirc;n \u0111\u1ed1i \u0111\u1ed3ng ch\u1ea5t, x&aacute;c su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1&nbsp;&quot;Gieo \u0111\u01b0\u1ee3c m\u1eb7t c&oacute;&nbsp;s\u1ed1 ch\u1ea5m&nbsp;l\u1edbn h\u01a1n 4&quot; l&agrave;<\/p>","options":["<strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>","<strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>","<strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{2}{3}$<\/span>","<strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{4}$<\/span>"],"correct":"1","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>.<\/span><\/p><p>V&igrave; s\u1ed1 ch\u1ea5m tr&ecirc;n m\u1ed7i m\u1eb7t c\u1ee7a con x&uacute;c x\u1eafc l&agrave; 1 ch\u1ea5m, 2 ch\u1ea5m, 3 ch\u1ea5m, 4 ch\u1ea5m, 5 ch\u1ea5m v&agrave; 6 ch\u1ea5m n&ecirc;n c&oacute; 6 k\u1ebft qu\u1ea3 c&oacute; th\u1ec3.<\/p><p>C&aacute;c m\u1eb7t c&oacute; s\u1ed1 ch\u1ea5m l\u1edbn h\u01a1n 4 l&agrave; m\u1eb7t 5 ch\u1ea5m v&agrave; m\u1eb7t 6 ch\u1ea5m. Suy ra c&oacute; 2 k\u1ebft qu\u1ea3 thu\u1eadn l\u1ee3i cho bi\u1ebfn c\u1ed1 &quot;Gieo \u0111\u01b0\u1ee3c m\u1eb7t c&oacute; s\u1ed1 ch\u1ea5m l\u1edbn h\u01a1n 4&quot;.<\/p><p>X&aacute;c xu\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1 \u0111&oacute; l&agrave;&nbsp;<span class=\"math-tex\">$\\dfrac{2}{6}=\\dfrac{1}{3}$<\/span>.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-03 22:04:23"},{"id":"10344","test_id":"695","question":"<p data-end=\"592\" data-start=\"291\">Hai t&uacute;i I v&agrave; II ch\u1ee9a c&aacute;c t\u1ea5m th\u1ebb \u0111\u01b0\u1ee3c ghi s\u1ed1 2; 3; 4; 5; 6. T\u1eeb m\u1ed7i t&uacute;i r&uacute;t ng\u1eabu nhi&ecirc;n m\u1ed9t t\u1ea5m th\u1ebb. Bi\u1ebfn c\u1ed1&nbsp;&ldquo;Hi\u1ec7u hai s\u1ed1 ghi tr&ecirc;n hai t\u1ea5m th\u1ebb l&agrave; s\u1ed1 ch\u1eb5n&rdquo; l&agrave;<\/p>","options":["<strong>A.<\/strong>&nbsp;bi\u1ebfn c\u1ed1 ch\u1eafc ch\u1eafn.","<strong>B.<\/strong> bi\u1ebfn c\u1ed1 ng\u1eabu nhi&ecirc;n.","<strong>C.<\/strong> bi\u1ebfn c\u1ed1 kh&ocirc;ng th\u1ec3.","<strong>D.<\/strong> bi\u1ebfn c\u1ed1 \u0111\u1ed3ng kh\u1ea3 n\u0103ng."],"correct":"2","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> bi\u1ebfn c\u1ed1 ng\u1eabu nhi&ecirc;n.<\/span><\/p><p>Bi\u1ebfn c\u1ed1&nbsp;&ldquo;Hi\u1ec7u hai s\u1ed1 ghi tr&ecirc;n hai t\u1ea5m th\u1ebb l&agrave; s\u1ed1 ch\u1eb5n&rdquo; l&agrave; bi\u1ebfn c\u1ed1 ng\u1eabu nhi&ecirc;n v&igrave; ta kh&ocirc;ng th\u1ec3 bi\u1ebft tr\u01b0\u1edbc \u0111\u01b0\u1ee3c n&oacute; c&oacute; x\u1ea3y ra hay kh&ocirc;ng.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-03 22:05:45"}]}