{"common":{"save":0,"post_id":"4571","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6615","post_id":"4571","mon_id":"1158113","chapter_id":"1158119","question":"<p>T&igrave;m m\u1ed9t s\u1ed1 bi\u1ebft&nbsp; &nbsp;<span class=\"frac123\"><span class=\"ts\">4<\/span><span class=\"ms\">7<\/span><\/span> &nbsp;c\u1ee7a s\u1ed1 \u0111&oacute; l&agrave; 44.<\/p><p><strong>S\u1ed1 \u0111&oacute; l&agrave;<\/strong>&nbsp;&nbsp;&lt;input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/&gt;&nbsp;.<\/p>","options":"","correct":["[\"77\"]"],"level":"1","hint":"<p>Mu\u1ed1n t&igrave;m m\u1ed9t s\u1ed1 khi bi\u1ebft&nbsp;<span class=\"math-tex\">$\u200b\u200b\\dfrac{m}{n}$<\/span>&nbsp; c\u1ee7a s\u1ed1 \u0111&oacute; l&agrave; a, ta t&iacute;nh&nbsp;<span class=\"math-tex\">$a:\\dfrac{m}{n}$<\/span>&nbsp;.<\/p>","answer":"<p>V&igrave;&nbsp; &nbsp;<span class=\"math-tex\">$\\dfrac{4}{7}$<\/span>&nbsp; c\u1ee7a s\u1ed1 \u0111&oacute; l&agrave; 44 n&ecirc;n s\u1ed1 \u0111&oacute; l&agrave;&nbsp;&nbsp;<span class=\"math-tex\">$44:\\dfrac{4}{7}=44.\\dfrac{7}{4} = 11.7=$<\/span><span style=\"color:#16a085;\"><strong>&nbsp;77<\/strong><\/span><\/p><p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n l&agrave;&nbsp;<strong><span style=\"color:#16a085;\"> 77<\/span><\/strong> .<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-08-26 14:01:49"},{"id":"6616","post_id":"4571","mon_id":"1158113","chapter_id":"1158119","question":"<p>\u0110\u1ed5i ph&acirc;n s\u1ed1&nbsp; <span class=\"frac123\"><span class=\"ts\">33<\/span><span class=\"ms\">7<\/span><\/span>&nbsp; &nbsp;sang h\u1ed7n s\u1ed1.<\/p>","options":["<span class=\"math-tex\">$5\\dfrac{4}{7}$<\/span>","<span class=\"math-tex\">$4\\dfrac{5}{7}$<\/span>","<span class=\"math-tex\">$7\\dfrac{5}{4}$<\/span>"],"correct":"2","level":"1","hint":"<p>N\u1ebfu&nbsp; a chia cho b \u0111\u01b0\u1ee3c th\u01b0\u01a1ng l&agrave;&nbsp; q&nbsp; v&agrave; s\u1ed1 d\u01b0 l&agrave; r th&igrave; ph&acirc;n s\u1ed1&nbsp;<span class=\"math-tex\">$\u200b\u200b\\dfrac{a}{b}$<\/span>&nbsp; =&nbsp;&nbsp;<span class=\"math-tex\">$q+\\dfrac{r}{b} = q\\dfrac{r}{b}$<\/span>&nbsp; v\u1edbi a, b, q, r l&agrave; c&aacute;c s\u1ed1 t\u1ef1 nhi&ecirc;n kh&aacute;c 0.<\/p>","answer":"<p>V&igrave;&nbsp; 33 chia cho 7 \u0111\u01b0\u1ee3c th\u01b0\u01a1ng l&agrave; <strong>4<\/strong> v&agrave; s\u1ed1 d\u01b0 l&agrave; <strong>5<\/strong> n&ecirc;n<\/p><p><span class=\"math-tex\">$\\dfrac{33}{7}=4+\\dfrac{5}{7}=$<\/span>&nbsp;<span style=\"color:#16a085;\"><span class=\"math-tex\">$4\\dfrac{5}{7}$<\/span><\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;&nbsp;<span style=\"color:#16a085;\"><span class=\"math-tex\">$4\\dfrac{5}{7}$<\/span>&nbsp;.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-08-26 14:02:38","option_type":"math","len":0},{"id":"6621","post_id":"4571","mon_id":"1158113","chapter_id":"1158119","question":"<p>Ch\u1ecdn ph&eacute;p t&iacute;nh <strong>sai<\/strong><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$4:\\dfrac{5}{8}=\\dfrac{20}{8}$<\/span>","<strong>B. <\/strong> <span class=\"math-tex\">$\\dfrac{8}{3}:\\dfrac{1}{2}=\\dfrac{16}{3}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{28}:\\dfrac{6}{7}=\\dfrac{3}{8}$<\/span>"],"correct":"1","level":"1","hint":"<p>Mu\u1ed1n chia m\u1ed9t&nbsp;ph&acirc;n s\u1ed1 cho m\u1ed9t ph&acirc;n s\u1ed1 kh&aacute;c 0 ta nh&acirc;n s\u1ed1 b\u1ecb chia v\u1edbi ph&acirc;n s\u1ed1 ngh\u1ecbch \u0111\u1ea3o c\u1ee7a s\u1ed1 chia:<\/p><p><span class=\"math-tex\">$\\dfrac{a}{b}:\\dfrac{c}{d}=\\dfrac{a}{b}.\\dfrac{d}{c}=\\dfrac{a.d}{b.c}$<\/span><\/p>","answer":"<p><span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<\/span>&nbsp;<span class=\"math-tex\">$4:\\dfrac{5}{8}=\\dfrac{20}{8}$<\/span>&nbsp; &nbsp;(<span style=\"color:#16a085;\">sai<\/span> v&igrave;&nbsp; &nbsp; &nbsp;<span class=\"math-tex\">$4:\\dfrac{5}{8}=\\dfrac{4}{1}.\\dfrac{8}{5}=\\dfrac{4.8}{1.5}=\\dfrac{32}{5}$<\/span>&nbsp;)<\/p><p><strong>B.&nbsp;<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{8}{3}:\\dfrac{1}{2}=\\dfrac{16}{3}$<\/span>&nbsp; (\u0111&uacute;ng v&igrave;&nbsp;&nbsp;<span class=\"math-tex\">$\\dfrac{8}{3}:\\dfrac{1}{2}=\\dfrac{8}{3}.\\dfrac{2}{1}=\\dfrac{8.2}{3.1}=\\dfrac{16}{3}$<\/span>&nbsp;)<\/p><p><strong>C.<\/strong>&nbsp;&nbsp;<span class=\"math-tex\">$\\dfrac{9}{28}:\\dfrac{6}{7}=\\dfrac{3}{8}$<\/span>&nbsp; (\u0111&uacute;ng v&igrave;&nbsp;&nbsp;<span class=\"math-tex\">$\\dfrac{9}{28}:\\dfrac{6}{7}=\\dfrac{9}{28}.\\dfrac{7}{6}=\\dfrac{9.7}{28.6}=\\dfrac{3.3.7}{4.7.3.2}=\\dfrac{3}{4.2}=\\dfrac{3}{8}$<\/span>&nbsp;)<\/p><p>\u0110&aacute;p &aacute;n l&agrave;&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong><\/span>&nbsp;&nbsp;<span style=\"color:#16a085;\"><span class=\"math-tex\">$4:\\dfrac{5}{8}=\\dfrac{20}{8}$<\/span><\/span>&nbsp;<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2021-08-26 14:25:30","option_type":"math","len":0}]}