Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"4570","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6527","post_id":"4570","mon_id":"1158113","chapter_id":"1158119","question":"<p>Ch\u1ecdn \u0111áp án \u0111úng \u0111\u1ec3 \u0111i\u1ec1n vào ch\u1ed7 <strong>...<\/strong><\/p><p>Trong hai phân s\u1ed1 có cùng m\u1eabu d\u01b0\u01a1ng, phân s\u1ed1 nào có t\u1eed nh\u1ecf h\u01a1n thì phân s\u1ed1 \u0111ó<strong> ...<\/strong><\/p>","options":["L\u1edbn h\u01a1n","Nh\u1ecf h\u01a1n"],"correct":"2","level":"1","hint":"","answer":"<p>Trong hai phân s\u1ed1 có cùng m\u1eabu d\u01b0\u01a1ng, phân s\u1ed1 nào có t\u1eed nh\u1ecf h\u01a1n thì phân s\u1ed1 \u0111ó <font color=\"#16a085\">nh\u1ecf h\u01a1n<\/font>.<\/p><p>\u0110áp án \u0111úng là <strong><span style=\"color:#16a085;\">nh\u1ecf<\/span><span style=\"color:#16a085;\"> h\u01a1n<\/span><\/strong>.<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"1","date":"2021-08-26 03:56:02","option_type":"txt","len":0},{"id":"6533","post_id":"4570","mon_id":"1158113","chapter_id":"1158119","question":"<p>Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh <strong>sai<\/strong>.<\/p>","options":["<strong>A<\/strong>. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{-1}{2}$<\/span> là <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> .","<strong>B<\/strong>. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{-2}{5}$<\/span> là <span class=\"math-tex\">$\\dfrac{5}{2}$<\/span>","<strong>C<\/strong>. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{3}{-4}$<\/span> là <span class=\"math-tex\">$\\dfrac{3}{4}$<\/span>","<strong>D<\/strong>. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{3}{5}$<\/span> là <span class=\"math-tex\">$\\dfrac{-3}{5}$<\/span>"],"correct":"2","level":"1","hint":"<p>S\u1ed1 \u0111\u1ed1i c\u1ee7a phân s\u1ed1 <span class=\"math-tex\">$\\dfrac{a}{b}$<\/span> là <span class=\"math-tex\">$\\dfrac{-a}{b}$<\/span> .<\/p>","answer":"<p>A. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{-1}{2}$<\/span> là <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> . (\u0110úng)<\/p><p><strong><span style=\"color:#16a085;\">B<\/span><\/strong>. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{-2}{5}$<\/span> là <span class=\"math-tex\">$\\dfrac{5}{2}$<\/span>. (<strong><span style=\"color:#16a085;\">Sai<\/span><\/strong> vì s\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{-2}{5}$<\/span> là <span class=\"math-tex\">$\\dfrac{2}{5}$<\/span> )<\/p><p>C. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{3}{-4}$<\/span> là <span class=\"math-tex\">$\\dfrac{3}{4}$<\/span>. (\u0110úng)<\/p><p>D. S\u1ed1 \u0111\u1ed1i c\u1ee7a <span class=\"math-tex\">$\\dfrac{3}{5}$<\/span> là <span class=\"math-tex\">$\\dfrac{-3}{5}$<\/span> . (\u0110úng)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B. S\u1ed1 \u0111\u1ed1i c\u1ee7a <\/strong><span class=\"math-tex\">$\\dfrac{-2}{5}$<\/span><strong> là <\/strong><span class=\"math-tex\">$\\dfrac{5}{2}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-08-26 04:08:31","option_type":"math","len":0},{"id":"6535","post_id":"4570","mon_id":"1158113","chapter_id":"1158119","question":"<p>Ch\u1ecdn kh\u1eb3ng \u0111\u1ecbnh <strong>\u0111úng<\/strong>.<\/p>","options":["<strong>A. <\/strong> <span class=\"math-tex\">$3\\dfrac{4}{9}=\\dfrac{31}{4}$<\/span>","<strong>B. <\/strong> <span class=\"math-tex\">$5\\dfrac{2}{3}=\\dfrac{17}{5}$<\/span>","<strong>C. <\/strong> <span class=\"math-tex\">$3\\dfrac{9}{10}=\\dfrac{39}{3}$<\/span>","<strong>D. <\/strong> <span class=\"math-tex\">$6\\dfrac{1}{5}=\\dfrac{31}{5}$<\/span>"],"correct":"4","level":"1","hint":"<p>Áp d\u1ee5ng công th\u1ee9c \u0111\u1ed5i t\u1eeb h\u1ed7n s\u1ed1 sang phân s\u1ed1: <span class=\"math-tex\">$a\\dfrac{b}{c}=\\dfrac{a.c+b}{c}$<\/span>.<\/p>","answer":"<p><strong>A. <\/strong> <span class=\"math-tex\">$3\\dfrac{4}{9}=\\dfrac{31}{4}$<\/span> (sai vì <span class=\"math-tex\">$3\\dfrac{4}{9}=\\dfrac{3.9+4}{9} = \\dfrac{31}{9}$<\/span> )<\/p><p><strong>B. <\/strong> <span class=\"math-tex\">$5\\dfrac{2}{3}=\\dfrac{17}{5}$<\/span> (sai vì <span class=\"math-tex\">$5\\dfrac{2}{3}=\\dfrac{5.3+2}{3}=\\dfrac{17}{3}$<\/span> )<\/p><p><strong>C. <\/strong> <span class=\"math-tex\">$3\\dfrac{9}{10}=\\dfrac{39}{3}$<\/span> (sai vì <span class=\"math-tex\">$3\\dfrac{9}{10}=\\dfrac{3.10+9}{10}=\\dfrac{39}{10}$<\/span> )<\/p><p><strong><span style=\"color:#16a085;\">D.<\/span> <\/strong> <span class=\"math-tex\">$6\\dfrac{1}{5}=\\dfrac{31}{5}$<\/span> (<span style=\"color:#16a085;\">\u0111úng<\/span> vì <span class=\"math-tex\">$6\\dfrac{1}{5}=\\dfrac{6.5+1}{5}=\\dfrac{31}{5}$<\/span> )<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>D. <\/strong><\/span><span style=\"color:#16a085;\"><span class=\"math-tex\">$6\\dfrac{1}{5}=\\dfrac{31}{5}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2021-08-26 04:19:30","option_type":"math","len":0}]}