Trung điểm của đoạn thẳng - Bài tập trung bình số 2

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Bài 35: Trung điểm của đoạn thẳngBài tập trung bình

{"common":{"save":0,"post_id":"4838","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8763","post_id":"4838","mon_id":"1158113","chapter_id":"1158164","question":"Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng AB bi\u1ebft M là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng AB và AM = 75,25 cm.<\/p>","options":["AB = 150,5 cm","AB = 150,5 mm","AB = 75,25 mm","AB = 75,25 cm"],"correct":"1","level":"2","hint":"","answer":"Vì M là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng AB nên AM = BM = $\\dfrac{AB}{2}$<\/span><\/p>Suy ra AB = 2 . AM = 2 . 75,25 = 150,5 cm<\/p>\u0110áp án \u0111úng là   AB = 150,5 cm<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-09 02:48:47","option_type":"txt","len":1},{"id":"8765","post_id":"4838","mon_id":"1158113","chapter_id":"1158164","question":"Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng PQ bi\u1ebft Q là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PM và PM = $\\dfrac{80}{17}$<\/span> cm.<\/p>","options":["PQ = $\\dfrac{80}{17}$<\/span> cm","PQ = $\\dfrac{40}{17}$<\/span> cm","PQ = $\\dfrac{160}{17}$<\/span> cm"],"correct":"2","level":"2","hint":"PQ = $\\dfrac{PM}{2}$<\/span><\/p>","answer":"Vì Q là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PM nên PQ = QM = $\\dfrac{PM}{2}$<\/span><\/p>Suy ra   $PQ =\\dfrac{PM}{2}=\\dfrac{\\dfrac{80}{17}}{2}=\\dfrac{80}{17}.\\dfrac{1}{2}=\\dfrac{40}{17} cm$<\/span>  <\/p>\u0110áp án \u0111úng là   PQ = $\\dfrac{40}{17}$<\/span> cm<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-09 02:54:49","option_type":"math","len":0},{"id":"8767","post_id":"4838","mon_id":"1158113","chapter_id":"1158164","question":"Bi\u1ebft Q là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PM và PM = $\\dfrac{125}{4}$<\/span> cm. Tính \u0111\u1ed9 dài \u0111o\u1ea1n th\u1eb3ng PQ.<\/p>","options":["PQ = $\\dfrac{125}{8}$<\/span> cm","PQ = $\\dfrac{125}{2}$<\/span> cm","PQ = $\\dfrac{125}{4}$<\/span> cm"],"correct":"1","level":"2","hint":"PQ = $\\dfrac{PM}{2}$<\/span><\/p>","answer":"Vì Q là trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PM nên PQ = QM = $\\dfrac{PM}{2}$<\/span><\/p>Suy ra   $PQ =\\dfrac{PM}{2}=\\dfrac{\\dfrac{125}{4}}{2}=\\dfrac{125}{4}.\\dfrac{1}{2}=\\dfrac{125}{8} cm$<\/span>  <\/p>\u0110áp án \u0111úng là   PQ = $\\dfrac{125}{8}$<\/span> cm<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-09 02:58:52","option_type":"math","len":0}]}