{"common":{"save":0,"post_id":"6918","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2672","post_id":"6918","mon_id":"1159012","chapter_id":"1159024","question":"<p>M\u1ed9t con b&aacute;o s\u0103n ch\u1ea1y 1 080&nbsp;m h\u1ebft&nbsp;<span class=\"math-tex\">$\\dfrac{3}{5}$<\/span>&nbsp;ph&uacute;t. H\u1ecfi trung b&igrave;nh m\u1ed7i gi&acirc;y con b&aacute;o s\u0103n \u0111&oacute; ch\u1ea1y \u0111\u01b0\u1ee3c bao nhi&ecirc;u m&eacute;t?<\/p>","options":["<strong>A.<\/strong> 30 m","<strong>B.<\/strong> 40 m","<strong>C.<\/strong> 35 m","<strong>D.<\/strong> 36 m"],"correct":"1","level":"3","hint":"","answer":"<p>V&igrave; 1 ph&uacute;t = 60 gi&acirc;y n&ecirc;n&nbsp;<span class=\"math-tex\">$\\dfrac{3}{5}$<\/span>&nbsp;ph&uacute;t =&nbsp;<span class=\"math-tex\">$\\dfrac{3}{5}\\mathbf{x}60$<\/span>&nbsp;= 36 gi&acirc;y.<\/p><p>Trung b&igrave;nh m\u1ed7i gi&acirc;y con b&aacute;o s\u0103n \u0111&oacute; ch\u1ea1y \u0111\u01b0\u1ee3c s\u1ed1 m&eacute;t l&agrave;<\/p><p><span class=\"math-tex\">$1080 : 36=30$<\/span>&nbsp;m.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;30&nbsp;m.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-13 03:29:41","option_type":"txt","len":0},{"id":"2674","post_id":"6918","mon_id":"1159012","chapter_id":"1159024","question":"<p>M\u1ed9t xe &ocirc; t&ocirc; ch\u1ea1y \u0111\u01b0\u1ee3c 480 km trong&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>&nbsp;ng&agrave;y. H\u1ecfi trung b&igrave;nh m\u1ed7i gi\u1edd &ocirc; t&ocirc; \u0111&oacute; ch\u1ea1y \u0111\u01b0\u1ee3c bao nhi&ecirc;u ki-l&ocirc;-m&eacute;t?<\/p>","options":["<strong>A.<\/strong> 50 km","<strong>B.<\/strong> 60 km","<strong>C.<\/strong> 40 km","<strong>D.<\/strong> 70 km"],"correct":"2","level":"3","hint":"","answer":"<p>V&igrave; 1ng&agrave;y = 24 gi\u1edd n&ecirc;n&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>&nbsp;ng&agrave;y =&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}\\mathbf{x}24$<\/span>&nbsp;= 8 gi\u1edd.<\/p><p>Trung b&igrave;nh 1 gi\u1edd &ocirc; t&ocirc; \u0111&oacute; ch\u1ea1y \u0111\u01b0\u1ee3c s\u1ed1 ki-l&ocirc;-m&eacute;t l&agrave;<\/p><p>480 : 8 = 60 km.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 60 km.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-13 03:34:52","option_type":"txt","len":0},{"id":"2675","post_id":"6918","mon_id":"1159012","chapter_id":"1159024","question":"<p>Ch&agrave;o m&agrave;o c&oacute; 20 qu\u1ea3 h\u1ed3ng. Ch&agrave;o m&agrave;o \u0103n h\u1ebft m\u1ed9t n\u1eeda c\u1ee7a m\u1ed9t n\u1eeda s\u1ed1 qu\u1ea3 h\u1ed3ng \u0111&oacute;. Ch&agrave;o m&agrave;o \u0111&atilde; \u0103n h\u1ebft bao nhi&ecirc;u&nbsp;qu\u1ea3 h\u1ed3ng?<\/p>","options":["<strong>A.<\/strong> 10 qu\u1ea3","<strong>B.<\/strong> 8 qu\u1ea3","<strong>C.<\/strong> 6 qu\u1ea3","<strong>D.<\/strong> 5 qu\u1ea3"],"correct":"4","level":"3","hint":"","answer":"<p>S\u1ed1 qu\u1ea3 h\u1ed3ng ch&agrave;o m&agrave;o&nbsp;\u0111&atilde; \u0103n l&agrave;<\/p><p>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}\\mathbf{x}\\dfrac{1}{2}\\mathbf{x}20=\\dfrac{1}{4}\\mathbf{x}20$<\/span>&nbsp;= 5 qu\u1ea3<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong> 5 qu\u1ea3.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-13 03:37:38","option_type":"txt","len":0}]}