{"common":{"save":0,"post_id":"7739","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2079","post_id":"7739","mon_id":"1159414","chapter_id":"1159461","question":"<p>8 m 30 000 dm ... 3 km 5 m<\/p>","options":["<strong>A.<\/strong> >","<strong>B.<\/strong> <","<strong>C.<\/strong> ="],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> ><\/span><\/p><p>8 m 30 000 dm = 3008 m<\/p><p>3 km 5 m = 3005 m<\/p><p>Vì 3008 m >3005 m nên 8 m 30 000 dm <span style=\"color:#16a085;\"><strong>><\/strong><\/span> 3 km 5 m<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-29 03:56:02","option_type":"txt","len":0},{"id":"2080","post_id":"7739","mon_id":"1159414","chapter_id":"1159461","question":"<p>M\u1ed9t sân g\u1ea1ch hình vuông có chu vi 160 m. Di\u1ec7n tích sân g\u1ea1ch \u0111ó là: …<\/p>","options":["<strong>A.<\/strong> 1600 cm²","<strong>B.<\/strong> 160 m²","<strong>C.<\/strong> 0,16 m²","<strong>D.<\/strong> 0,16 ha"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 0,16 ha<\/span><\/p><p>C\u1ea1nh c\u1ee7a hình vuông là: 160 : 4 = 40 (m)<\/p><p>Di\u1ec7n tích sân g\u1ea1ch \u0111ó là: 40 x 40 = 1600 (m²)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-29 03:57:59","option_type":"txt","len":2},{"id":"2081","post_id":"7739","mon_id":"1159414","chapter_id":"1159461","question":"<p>\u0110\u01b0\u1eddng t\u1eeb nhà Minh \u0111\u1ebfn tr\u01b0\u1eddng g\u1ed3m \u0111o\u1ea1n \u0111\u01b0\u1eddng xu\u1ed1ng d\u1ed1c dài 750 m và \u0111o\u1ea1n \u0111\u01b0\u1eddng lên d\u1ed1c b\u1eb1ng <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span> \u0111o\u1ea1n \u0111\u01b0\u1eddng xu\u1ed1ng d\u1ed1c. H\u1ecfi \u0111\u01b0\u1eddng t\u1eeb nhà Minh \u0111\u1ebfn tr\u01b0\u1eddng dài bao nhiêu ki-lô-mét?<\/p>","options":["<strong>A.<\/strong> 0,9 km","<strong>B.<\/strong> 1 km","<strong>C.<\/strong> 1000 km","<strong>D.<\/strong> 900 km"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 1 km<\/span><\/p><p>\u0110o\u1ea1n \u0111\u01b0\u1eddng lên d\u1ed1c dài s\u1ed1 mét là: 750 x <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span> = 250 (m)<\/p><p>\u0110o\u1ea1n \u0111\u01b0\u1eddng t\u1eeb nhà \u0111\u1ebfn tr\u01b0\u1eddng dài s\u1ed1 mét là: 750 + 250 = 1000 (m)<\/p><p>\u0110\u1ed5i \u0111\u01a1n v\u1ecb: 1000 m = 1 km<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-29 04:00:05","option_type":"txt","len":0}]}