{"common":{"save":0,"post_id":"8512","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4720","post_id":"8512","mon_id":"1159414","chapter_id":"1159498","question":"<p>2,4&nbsp;gi\u1edd =&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;ph&uacute;t<\/p>","options":["<strong>A.<\/strong> 24","<strong>B.<\/strong> 120","<strong>C.<\/strong> 140","<strong>D.<\/strong> 144"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong> 144.<\/span><\/p><p>Ta c&oacute; 2,4&nbsp;gi\u1edd = 2,4&nbsp;x 60 ph&uacute;t = <span style=\"color:#16a085;\"><strong>144<\/strong><\/span> ph&uacute;t.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:46:22","option_type":"txt","len":0},{"id":"4721","post_id":"8512","mon_id":"1159414","chapter_id":"1159498","question":"<p>2 gi\u1edd 24 ph&uacute;t =&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;gi\u1edd.<\/p>","options":["<strong>A.<\/strong> 2,24","<strong>B.<\/strong> 2,4","<strong>C.<\/strong> 0,4","<strong>D.<\/strong> 2,12"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 2,4.<\/span><\/p><p>V&igrave; 24 ph&uacute;t =&nbsp;<span class=\"math-tex\">$\\dfrac{24}{60}$<\/span>&nbsp;gi\u1edd = 0,4 gi\u1edd n&ecirc;n&nbsp;2 gi\u1edd 24 ph&uacute;t = 2 gi\u1edd + 0,4 gi\u1edd = <span style=\"color:#16a085;\"><strong>2,4<\/strong><\/span> gi\u1edd.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:49:29","option_type":"txt","len":0},{"id":"4726","post_id":"8512","mon_id":"1159414","chapter_id":"1159498","question":"<p>Th\u1eddi gian m\u1ed7i b\u1ea1n An, B&igrave;nh, Chi xem tivi&nbsp;m\u1ed7i ng&agrave;y \u0111\u01b0\u1ee3c cho trong b\u1ea3ng d\u01b0\u1edbi. H\u1ecfi th\u1eddi gian b\u1ea1n n&agrave;o xem tivi &iacute;t nh\u1ea5t?<\/p><p><span class=\"svgedit\"><svg height=\"133\" width=\"201\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"135\" id=\"canvas_background\" width=\"203\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"131\" id=\"svg_1\" width=\"199\" x=\"2.5\" 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6U5ImCQKg+f2JQKJ5nNudO3RbqqbBsr9Ouu4fyLf+mZVohRT7ScSqgokKh87sdYGc+oqji2w5bVjs4iuRz2JErskgi2T4tiwOHhauL03GLN0yqQ4dsYW147k9KvSGlCQ0di8Gl\/a9WguKY6NiuOclK5VkWC2zJE4kiQ55iCOw3\/zla98nbxSHPnKV+H1f\/7U0mDKngghAAAAAElFTkSuQmCC\" y=\"1.5\"><\/image> <\/g> <\/svg><\/span><\/p>","options":["<strong>A.<\/strong> An","<strong>B.<\/strong> B&igrave;nh","<strong>C.<\/strong> Chi"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong> Chi.<\/span><\/p><p>\u0110\u1ed5i: 1 gi\u1edd 20 ph&uacute;t = 60 ph&uacute;t + 20 ph&uacute;t = 80 ph&uacute;t<\/p><p><span class=\"math-tex\">$\\dfrac{3}{10}$<\/span>&nbsp;gi\u1edd =&nbsp;<span class=\"math-tex\">$\\dfrac{3}{10}\\times60$<\/span>&nbsp;ph&uacute;t = 18 ph&uacute;t<\/p><p>0,25 gi\u1edd = 0,25 x 60 ph&uacute;t = 15 ph&uacute;t<\/p><p>V&igrave; 15 &lt; 18 &lt; 80 n&ecirc;n th\u1eddi gian Chi xem tivi &iacute;t nh\u1ea5t.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:59:55","option_type":"txt","len":1}]}