Ôn tập hình học và đo lường

Home Lớp 4 Toán lớp 4 - Sách Kết nối tri thức Bài 71 - Ôn tập hình học và đo lườngBài tập nâng cao

{"common":{"save":0,"post_id":"6887","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2832","post_id":"6887","mon_id":"1159012","chapter_id":"1159027","question":"Lan sinh n\u0103m 2014, n\u0103m nay Lan 10 tu\u1ed5i. H\u1ecfi N\u0103m nay là n\u0103m bao nhiêu và thu\u1ed9c th\u1ebf k\u1ec9 nào?<\/p>","options":["A.<\/strong> N\u0103m 2024, thu\u1ed9c th\u1ebf k\u1ec9 XXI.","B.<\/strong> N\u0103m 2025, thu\u1ed9c th\u1ebf k\u1ec9 XXI.","C.<\/strong> N\u0103m 2024, thu\u1ed9c th\u1ebf k\u1ec9 XX.","D.<\/strong> N\u0103m 2025, thu\u1ed9c th\u1ebf k\u1ec9 XXII."],"correct":"1","level":"3","hint":"","answer":"N\u0103m nay là n\u0103m 2014 + 10 = 2024.<\/p>N\u0103m 2024 thu\u1ed9c th\u1ebf k\u1ec9 XXI.<\/p>Ch\u1ecdn A.<\/strong> N\u0103m 2024, thu\u1ed9c th\u1ebf k\u1ec9 XXI.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-14 05:43:38","option_type":"txt","len":2},{"id":"2841","post_id":"6887","mon_id":"1159012","chapter_id":"1159027","question":"M\u1ed9t c\u1eeda hàng có 1 t\u1ea5n 500 kg g\u1ea1o t\u1ebb. Bi\u1ebft r\u1eb1ng s\u1ed1 g\u1ea1o n\u1ebfp b\u1eb1ng $\\dfrac{4}{5}$<\/span> s\u1ed1 g\u1ea1o t\u1ebb. H\u1ecfi c\u1eeda hàng \u0111ó có t\u1ea5t c\u1ea3 bao nhiêu ki-lô-gam g\u1ea1o t\u1ebb và g\u1ea1o n\u1ebfp?<\/p>","options":["A.<\/strong> 2600 kg","B.<\/strong> 2700 kg","C.<\/strong> 2800 kg","D.<\/strong> 2900 kg"],"correct":"2","level":"3","hint":"","answer":"\u0110\u1ed5i 1 t\u1ea5n 500 kg = 1000 kg + 500 kg = 1500 kg.<\/p>S\u1ed1 ki-lô-gam g\u1ea1o n\u1ebfp là $\\dfrac{4}{5}$<\/span> x 1500 = $\\dfrac{6000}{5}$<\/span> = 1200 kg.<\/p>T\u1ed5ng s\u1ed1 ki-lô-gam g\u1ea1o t\u1ebb và g\u1ea1o n\u1ebfp là 1500 + 1200 = 2700 kg.<\/p>Ch\u1ecdn B.<\/strong> 2700 kg.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-15 01:43:41","option_type":"txt","len":0},{"id":"2844","post_id":"6887","mon_id":"1159012","chapter_id":"1159027","question":"M\u1ed9t c\u1eeda hàng bu\u1ed5i sáng bán \u0111\u01b0\u1ee3c 700 kg g\u1ea1o, bu\u1ed5i chi\u1ec1u bán \u0111\u01b0\u1ee3c s\u1ed1 g\u1ea1o b\u1eb1ng $\\dfrac{8}{7}$<\/span> s\u1ed1 g\u1ea1o bu\u1ed5i sáng bán \u0111\u01b0\u1ee3c. Tính t\u1ed5ng s\u1ed1 ki-lô-gam g\u1ea1o mà c\u1ea3 hai bu\u1ed5i c\u1eeda hàng bán \u0111\u01b0\u1ee3c.<\/p>","options":["A.<\/strong> 1500 kg","B.<\/strong> 1600 kg","C.<\/strong> 1700 kg","D.<\/strong> 1800 kg"],"correct":"1","level":"3","hint":"","answer":"S\u1ed1 ki-lô-gam g\u1ea1o mà bu\u1ed5i chi\u1ec1u c\u1eeda hàng bán \u0111\u01b0\u1ee3c là $\\dfrac{8}{7}$<\/span> x 700 = 800 kg.<\/p>T\u1ed5ng s\u1ed1 ki-lô-gam g\u1ea1o mà c\u1ea3 hai bu\u1ed5i c\u1eeda hàng bán \u0111\u01b0\u1ee3c là<\/p>700 + 800 = 1500 kg.<\/p>Ch\u1ecdn A.<\/strong> 1500 kg.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-15 01:47:34","option_type":"txt","len":0}]}