{"common":{"save":0,"post_id":"8389","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4369","post_id":"8389","mon_id":"1159414","chapter_id":"1159496","question":"<p>B\u1ea1n Lan dùng m\u1ed9t chai n\u01b0\u1edbc có th\u1ec3 tích 0,6 <span class=\"math-tex\">$l$<\/span> \u0111\u1ec3 \u0111\u1ed5 \u0111\u1ea7y n\u01b0\u1edbc vào các ô làm \u0111á, m\u1ed7i ô có th\u1ec3 tích 8 cm³. H\u1ecfi b\u1ea1n Lan có th\u1ec3 \u0111\u1ed5 \u0111\u1ea7y \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u1ea5t bao nhiêu ô? Bi\u1ebft <span class=\"math-tex\">$1l=1\\;dm^3=1000\\;cm^3$<\/span>.<\/p>","options":["<strong>A.<\/strong> 100 ô","<strong>B.<\/strong> 85 ô","<strong>C.<\/strong> 75 ô","<strong>D.<\/strong> 58 ô"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 75 ô<\/span><\/p><p>\u0110\u1ed5i: 0,6 <span class=\"math-tex\">$l$<\/span> = 0,6 dm³ = 600 cm³.<\/p><p>B\u1ea1n Lan có th\u1ec3 \u0111\u1ed5 \u0111\u1ea7y \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u1ea5t s\u1ed1 ô là:<\/p><p>600 : 8 = 75 (ô)<\/p><p>\u0110áp s\u1ed1: 75 ô.<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"0","date":"2025-02-01 11:07:35","option_type":"txt","len":0},{"id":"4371","post_id":"8389","mon_id":"1159414","chapter_id":"1159496","question":"<p>M\u1ed9t can d\u1ea7u \u0103n có th\u1ec3 tích 5 <span class=\"math-tex\">$l$<\/span>. Ng\u01b0\u1eddi ta \u0111\u1ed5 d\u1ea7u \u0103n t\u1eeb can \u0111ó vào các chai nh\u1ecf, m\u1ed7i chai có th\u1ec3 tích 250 cm³. H\u1ecfi có th\u1ec3 \u0111\u1ed5 \u0111\u1ea7y nhi\u1ec1u nh\u1ea5t bao nhiêu chai? Bi\u1ebft 1 <span class=\"math-tex\">$l$<\/span> = 1 dm³.<\/p>","options":["<strong>A.<\/strong> 25 chai","<strong>B.<\/strong> 20 chai","<strong>C.<\/strong> 15 chai","<strong>D.<\/strong> 50 chai"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 20 chai<\/span><\/p><p>\u0110\u1ed5i: 5 <span class=\"math-tex\">$l$<\/span> = 5 dm³ = 5000 cm³.<\/p><p>S\u1ed1 chai d\u1ea7u \u0103n nhi\u1ec1u nh\u1ea5t có th\u1ec3 \u0111\u1ed5 \u0111\u1ea7y là:<\/p><p>5000 : 250 = 20 (chai)<\/p><p>\u0110áp s\u1ed1: 20 chai.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-01 11:16:55","option_type":"txt","len":0},{"id":"4372","post_id":"8389","mon_id":"1159414","chapter_id":"1159496","question":"<p>M\u1ed9t thùng xe t\u1ea3i có th\u1ec3 tích 33,2 m³. L\u01b0\u1ee3ng hàng hóa trên xe chi\u1ebfm 75% th\u1ec3 tích c\u1ee7a thùng xe. Tính th\u1ec3 tích ph\u1ea7n còn tr\u1ed1ng c\u1ee7a thùng xe.<\/p>","options":["<strong>A.<\/strong> 24,9 m³","<strong>B.<\/strong> 8,3 dm³","<strong>C.<\/strong> 24,9 dm³","<strong>D.<\/strong> 8,3 m³"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 8,3 m³<\/span><\/p><p>Th\u1ec3 tích ph\u1ea7n còn tr\u1ed1ng c\u1ee7a thùng xe chi\u1ebfm s\u1ed1 ph\u1ea7n tr\u0103m là:<\/p><p>100% – 75% = 25%<\/p><p>Th\u1ec3 tích ph\u1ea7n còn tr\u1ed1ng c\u1ee7a thùng xe là:<\/p><p>33,2 x 25 : 100 = 8,3 (m³)<\/p><p>\u0110áp s\u1ed1: 8,3 m³.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-01 11:22:35","option_type":"txt","len":2}]}
