Toán lớp 7 - Sách kết nối tri thức - Đề kiểm tra 15 phút - Toán lớp 7 - Sách kết nối tri thức - Tháng 10 - Số 2

{"save":1,"level":1,"time":"15","total":10,"point":5,"segment":[{"id":"9899","test_id":"667","question":"<p>S\u1ed1 th\u1eadp ph&acirc;n v&ocirc; h\u1ea1n kh&ocirc;ng tu\u1ea7n ho&agrave;n l&agrave;&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\" value=\"?\" \/&gt;.<\/p>","options":["<span bgimg=\"color:#000000;\"><strong>A.<\/strong> s\u1ed1 nguy&ecirc;n.<\/span>","<span bgimg=\"color:#000000;\"><strong>B.<\/strong> s\u1ed1 v&ocirc; t\u1ec9.<\/span>","<span bgimg=\"color:#000000;\"><strong>C.<\/strong> s\u1ed1 h\u1eefu t\u1ec9.<\/span>","<span bgimg=\"color:#000000;\"><strong>D.<\/strong> s\u1ed1 t\u1ef1 nhi&ecirc;n.<\/span>"],"correct":"2","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> s\u1ed1 v&ocirc; t\u1ec9.<\/span><\/p><p>S\u1ed1 v&ocirc; t\u1ec9 l&agrave; s\u1ed1 vi\u1ebft \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng s\u1ed1 th\u1eadp ph&acirc;n v&ocirc; h\u1ea1n kh&ocirc;ng tu\u1ea7n ho&agrave;n.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-02 08:27:17"},{"id":"9900","test_id":"667","question":"<p>Bi\u1ebft&nbsp;<span class=\"math-tex\">$0,(1)=\\dfrac{1}{9};0,(01)=\\dfrac{1}{99};0,(001)=\\dfrac{1}{999};...$<\/span> H&atilde;y vi\u1ebft s\u1ed1 th\u1eadp ph&acirc;n v&ocirc; h\u1ea1n tu\u1ea7n ho&agrave;n <span style=\"color:#16a085;\"><strong>0,818181...<\/strong><\/span> d\u01b0\u1edbi d\u1ea1ng ph&acirc;n s\u1ed1 t\u1ed1i gi\u1ea3n.<\/p>","options":["<strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{81}{11}$<\/span><strong data-end=\"137\" data-start=\"100\">.<\/strong>","<strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{9}$<\/span><strong>.<\/strong>","<strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{9}{10}$<\/span><strong data-end=\"137\" data-start=\"100\">.<\/strong>","<strong>D.<\/strong>&nbsp;<strong><span class=\"math-tex\">$\\dfrac{9}{11}$<\/span>.<\/strong>"],"correct":"4","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{9}{11}$<\/span>.<\/span><\/p><p>Ta c&oacute;: 0,818181... = 0,(81) = 81 . 0,(01) =&nbsp;<span class=\"math-tex\">$81.\\dfrac{1}{99}$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{9}{11}$<\/span>.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-02 08:38:50"}]}