{"common":{"save":0,"post_id":"6172","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2845","post_id":"6172","mon_id":"1158530","chapter_id":"1158602","question":"<p style=\"margin-bottom:11px\">Có 2 thùng d\u1ea7u, thùng th\u1ee9 nh\u1ea5t có 48 lít d\u1ea7u và <span class=\"math-tex\">$1 \\over 6$<\/span> s\u1ed1 d\u1ea7u \u1edf thùng th\u1ee9 nh\u1ea5t thêm 2 lít thì b\u1eb1ng <span class=\"math-tex\">$1 \\over 4$<\/span> s\u1ed1 d\u1ea7u \u1edf thùng th\u1ee9 hai. H\u1ecfi thùng th\u1ee9 hai có bao nhiêu lít d\u1ea7u?<\/p>","options":["10 lít d\u1ea7u","20 lít d\u1ea7u","30 lít d\u1ea7u","40 lít d\u1ea7u"],"correct":"4","level":"3","hint":"","answer":"<p><span class=\"math-tex\">$1 \\over 6$<\/span> s\u1ed1 d\u1ea7u \u1edf thùng th\u1ee9 nh\u1ea5t thêm 2 lít thì b\u1eb1ng <span class=\"math-tex\">$1 \\over 4$<\/span> s\u1ed1 d\u1ea7u \u1edf thùng th\u1ee9 hai,<\/p><p>nên<span style=\"color:#2980b9;\"><strong> <span class=\"math-tex\">$1 \\over 4$<\/span> <\/strong><\/span><span style=\"text-align: center;\"><span style=\"color:#2980b9;\">thùng d\u1ea7u th\u1ee9 hai có s\u1ed1 lít là<\/span>:<\/span><\/p><p>48 : 6 + 2 = 10 (lít)<\/p><p>Thùng d\u1ea7u th\u1ee9 hai có s\u1ed1 lít d\u1ea7u là:<\/p><p>10 x 4 = 40 (lít)<\/p><p>\u0110áp s\u1ed1: <span style=\"color:#16a085;\"><strong>40 lít d\u1ea7u<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"129","test":"3","date":"2022-09-11 04:00:06","option_type":"txt","len":2},{"id":"2846","post_id":"6172","mon_id":"1158530","chapter_id":"1158602","question":"<p style=\"margin-bottom:11px\">Bi\u1ebft <span style=\"font-size:11pt\"><span style=\"line-height:107%\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"font-size:16.0pt\"><span style=\"line-height:107%\"><span class=\"math-tex\">$1 \\over4$<\/span><\/span><\/span><\/span><\/span><\/span> s\u1ed1 gà thêm 4 con thì \u0111\u01b0\u1ee3c 16 con, s\u1ed1 v\u1ecbt b\u1eb1ng <span style=\"font-size:11pt\"><span style=\"line-height:107%\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"font-size:16.0pt\"><span style=\"line-height:107%\"><span class=\"math-tex\">$1 \\over3$<\/span><\/span><\/span><\/span><\/span><\/span> s\u1ed1 gà. H\u1ecfi có bao nhiêu con v\u1ecbt?<\/p>","options":["40 con gà, 16 con v\u1ecbt","48 con gà, 16 con v\u1ecbt","48 con gà, 10 con v\u1ecbt","40 con gà, 10 con v\u1ecbt"],"correct":"2","level":"3","hint":"","answer":"<p><span style=\"font-size:11pt\"><span style=\"line-height:107%\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"font-size:16.0pt\"><span style=\"line-height:107%\"><span class=\"math-tex\">$1 \\over4$<\/span> <\/span><\/span><\/span><\/span><\/span>s\u1ed1 gà thêm 4 con thì \u0111\u01b0\u1ee3c 16 con, nêncó <span style=\"color:#2980b9;\">s\u1ed1 con gà là<\/span>:<\/p><p>(16 - 4) x 4 = 48 (con gà)<\/p><p>Có s\u1ed1 con v\u1ecbt là:<\/p><p>48 : 3 = 16 (con v\u1ecbt)<\/p><p>\u0110áp s\u1ed1: <span style=\"color:#16a085;\"><strong>48 con gà, 16 con v\u1ecbt<\/strong><\/span><\/p><p><span style=\"font-size:11pt\"><span style=\"line-height:107%\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"font-size:16.0pt\"><span style=\"line-height:107%\"><\/span><\/span><\/span><\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"129","test":"3","date":"2022-09-11 04:08:02","option_type":"txt","len":2},{"id":"2847","post_id":"6172","mon_id":"1158530","chapter_id":"1158602","question":"<p>\u0110\u1ec3 \u0111ánh s\u1ed1 trang m\u1ed9t cu\u1ed1n sách ng\u01b0\u1eddi ta dùng t\u1ea5t c\u1ea3 65 ch\u1eef s\u1ed1. H\u1ecfi cu\u1ed1n sách \u0111ó có bao nhiêu trang?<\/p>","options":["33 trang sách","35 trang sách","37 trang sách","39 trang sách"],"correct":"3","level":"3","hint":"","answer":"<p>\u0110\u1ec3 \u0111ánh s\u1ed1 <span style=\"color:#2980b9;\">9 trang<\/span>, t\u1eeb trang 1 \u0111\u1ebfn trang 9 c\u1ea7n s\u1ed1 ch\u1eef s\u1ed1 là:<\/p><p>(9 - 1) : 1 + 1 = 9 (ch\u1eef s\u1ed1)<\/p><p>Ng\u01b0\u1eddi ta dùng t\u1ea5t c\u1ea3 65 ch\u1eef s\u1ed1, \u0111ã dùng 9 ch\u1eef s\u1ed1 \u1edf trên, nên còn l\u1ea1i s\u1ed1 ch\u1eef s\u1ed1 là:<\/p><p>65 - 9 = 56 (ch\u1eef s\u1ed1)<\/p><p>S\u1ed1 l\u01b0\u1ee3ng <u>trang sách<\/u> có 2 ch\u1eef s\u1ed1 là:<\/p><p>56 : 2 = <span style=\"color:#2980b9;\">28 (trang)<\/span><\/p><p>Quy\u1ec3n sách có s\u1ed1 trang là:<\/p><p>9 + 28 = 37 (trang)<\/p><p>\u0110áp s\u1ed1: <span style=\"color:#16a085;\"><strong>37 trang sách<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"129","test":"3","date":"2022-09-11 05:26:10","option_type":"txt","len":2}]}