{"common":{"save":0,"post_id":"5661","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6942","post_id":"5661","mon_id":"1158532","chapter_id":"1158544","question":"<p>Trong tu\u1ea7n tr\u01b0\u1edbc Nam \u0111&atilde; ch\u01a1i b&oacute;ng \u0111&aacute;, b&oacute;ng r\u1ed5 v&agrave; c\u1ea7u l&ocirc;ng v\u1edbi t\u1ed5ng th\u1eddi gian l&agrave; 10,5 gi\u1edd. Bi\u1ebft th\u1eddi gian Nam ch\u01a1i b&oacute;ng \u0111&aacute; v&agrave; c\u1ea7u l&ocirc;ng l\u1ea7n l\u01b0\u1ee3t l&agrave;&nbsp; <span class=\"math-tex\">$4\\dfrac{1}{2}$<\/span>&nbsp; gi\u1edd v&agrave;&nbsp; <span class=\"math-tex\">$2\\dfrac{1}{3}$<\/span>&nbsp; gi\u1edd. T&igrave;m th\u1eddi gian Nam ch\u01a1i b&oacute;ng r\u1ed5 trong tu\u1ea7n tr\u01b0\u1edbc.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{3}$<\/span> gi\u1edd","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{4}$<\/span> gi\u1edd","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{4}$<\/span> gi\u1edd","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{3}$<\/span>gi\u1edd"],"correct":"1","level":"3","hint":"","answer":"<p>Th\u1eddi gian Nam ch\u01a1i b&oacute;ng r\u1ed5 l&agrave;<\/p><p><span class=\"math-tex\">$10,5-4\\dfrac{1}{2}-2\\dfrac{1}{3}=\\dfrac{21}{2}-\\dfrac{9}{2}-\\dfrac{7}{3}=\\dfrac{63}{6}-\\dfrac{27}{6}-\\dfrac{14}{6}=\\dfrac{22}{6}=\\dfrac{11}{3}$<\/span>&nbsp;(gi\u1edd)<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; &nbsp;&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{11}{3}$<\/span>&nbsp;gi\u1edd<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-05 09:43:17","option_type":"math","len":0},{"id":"6945","post_id":"5661","mon_id":"1158532","chapter_id":"1158544","question":"<p>Anh Ba \u0111\u1eb7t mua 12 c&aacute;i b&aacute;nh pizza cho m\u1ed9t bu\u1ed5i li&ecirc;n hoan \u0111\u1ea7u n\u0103m. Ngo\u1ea1i tr\u1eeb anh Ba \u0111&atilde; \u0103n h\u1ebft m\u1ed9t n\u1eeda chi\u1ebfc b&aacute;nh pizza, m\u1ed7i ng\u01b0\u1eddi c&ograve;n l\u1ea1i trong bu\u1ed5i li&ecirc;n hoan \u0111\u1ec1u \u0103n h\u1ebft&nbsp;<span class=\"math-tex\">$\\dfrac{1}{4}$<\/span>&nbsp;c\u1ee7a m\u1ed9t chi\u1ebfc b&aacute;nh. T&iacute;nh s\u1ed1 ng\u01b0\u1eddi trong bu\u1ed5i li&ecirc;n hoan, bi\u1ebft t\u1ea5t c\u1ea3 b&aacute;nh \u0111\u1ec1u \u0111\u01b0\u1ee3c \u0103n h\u1ebft.<\/p><p>\u0110&aacute;p s\u1ed1: Bu\u1ed5i li&ecirc;n hoan c&oacute;&nbsp;&lt;input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/&gt;&nbsp;ng\u01b0\u1eddi.<\/p>","options":"","correct":["[\"47\"]"],"level":"3","hint":"","answer":"<p>V&igrave; anh Ba \u0111&atilde;&nbsp;\u0103n m\u1ed9t n\u1eeda chi\u1ebfc b&aacute;nh pizza n&ecirc;n s\u1ed1 b&aacute;nh c&ograve;n l\u1ea1i sau khi anh Ba \u0103n l&agrave;:<\/p><p><span class=\"math-tex\">$12-\\dfrac{1}{2}=\\dfrac{24-1}{2}=\\dfrac{23}{2}$<\/span>&nbsp;(chi\u1ebfc b&aacute;nh)<\/p><p>S\u1ed1 ng\u01b0\u1eddi c\u1ee7a bu\u1ed5i li&ecirc;n hoan kh&ocirc;ng t&iacute;nh&nbsp;anh Ba l&agrave;:<\/p><p><span class=\"math-tex\">$\\dfrac{23}{2}:\\dfrac{1}{4}=\\dfrac{23}{2}.4=46$<\/span>&nbsp;(ng\u01b0\u1eddi)<\/p><p>V\u1eady k\u1ec3 c\u1ea3 anh Ba th&igrave; bu\u1ed5i li&ecirc;n hoan c&oacute;&nbsp; 46 + 1 = 47 ng\u01b0\u1eddi.<\/p><p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n l&agrave;&nbsp; <span style=\"color:#16a085;\"><strong>47<\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"3","date":"2022-04-05 09:52:08"},{"id":"6947","post_id":"5661","mon_id":"1158532","chapter_id":"1158544","question":"<p>T&iacute;nh gi&aacute; tr\u1ecb bi\u1ec3u th\u1ee9c<\/p><p><span class=\"math-tex\">$\\dfrac{1}{16}: \\left( \\dfrac{1}{3}-\\dfrac{1}{4} \\right)^2+0,25^3.4^3-12^5:(-6)^5$<\/span><\/p>","options":["<strong>A. <\/strong>42","<strong>B.<\/strong> -42","<strong>C. <\/strong>43","<strong>D.<\/strong> -43"],"correct":"1","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{1}{16}: \\left( \\dfrac{1}{3}-\\dfrac{1}{4} \\right)^2+0,25^3.4^3-12^5:(-6)^5$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{1}{16}: \\left( \\dfrac{4}{12}-\\dfrac{3}{12} \\right)^2+(0,25.4)^3-[12:(-6)]^5$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{1}{16}: \\left( \\dfrac{1}{12} \\right)^2+1^3-(-2)^5$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{1}{16}: \\dfrac{1}{144}+1-(-32)$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$\\dfrac{1}{16}. 144 +1 + 32$<\/span><\/p><p>=&nbsp;<span class=\"math-tex\">$9 + 33 = 42$<\/span><\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\"><strong>A.<\/strong> 42<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-06 08:56:18","option_type":"txt","len":0}]}