Ôn tập chương 3 Số Nguyên - Bài tập trung bình số 1

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Ôn tập chương 3: Số nguyênBài tập trung bình

{"common":{"save":0,"post_id":"4584","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6641","post_id":"4584","mon_id":"1158113","chapter_id":"1158128","question":"Vi\u1ebft l\u1ea1i t\u1eadp h\u1ee3p sau b\u1eb1ng cách ch\u1ec9 ra tính ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a các ph\u1ea7n t\u1eed.<\/p>M = { -3; -2; -1; 0; 1; 2 }<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/3-me-con-soc.png\" \/><\/div>","options":["A. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 < x <2 \\}$<\/span>","B. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 \\le x <2 \\}$<\/span>","C. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 \\le x \\le2 \\}$<\/span>"],"correct":"3","level":"2","hint":"T\u1eadp h\u1ee3p M g\u1ed3m các s\u1ed1 nguyên t\u1eeb -3 cho \u0111\u1ebfn 2.<\/p>","answer":"T\u1eadp h\u1ee3p M = { -3; -2; -1; 0; 1; 2 } g\u1ed3m các s\u1ed1 nguyên t\u1eeb -3 cho \u0111\u1ebfn 2<\/p>Do \u0111ó t\u1eadp h\u1ee3p M có th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau: $M= \\{ x \\in \\mathbb{Z} | -3 \\le x \\le2 \\}$<\/span><\/p>ho\u1eb7c $M= \\{ x \\in \\mathbb{Z} | -3 \\le x <3 \\}$<\/span> ho\u1eb7c $M= \\{ x \\in \\mathbb{Z} | -4 < x \\le 2 \\}$<\/span>  ho\u1eb7c $M= \\{ x \\in \\mathbb{Z} | -4 < x <3 \\}$<\/span><\/p>Xét A. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 < x <2 \\}$<\/span> sai<\/span><\/p>B. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 \\le x <2 \\}$<\/span> sai<\/span><\/p>C. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 \\le x \\le2 \\}$<\/span> \u0111úng<\/span><\/p>V\u1eady \u0111áp án \u0111úng là C. <\/strong>$M= \\{ x \\in \\mathbb{Z} | -3 \\le x \\le2 \\}$<\/span> <\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-26 15:31:09","option_type":"math","len":0},{"id":"6642","post_id":"4584","mon_id":"1158113","chapter_id":"1158128","question":"T\u1eadp h\u1ee3p các \u01b0\u1edbc c\u1ee7a -22 là?<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/bunny.png\" \/><\/div>","options":["A. <\/strong>$\\{ \\pm1; \\pm2; \\pm11; \\pm22\\} $<\/span>","B. <\/strong>$\\{ +1;+ 2; +11; +22\\} $<\/span>","C. <\/strong>$\\{ -1; -2; -11; -22\\} $<\/span>"],"correct":"1","level":"2","hint":"Tìm các \u01b0\u1edbc c\u1ee7a 22 tr\u01b0\u1edbc. \u0110ó c\u0169ng chính là các \u01b0\u1edbc c\u1ee7a -22.<\/p>","answer":"Tât c\u1ea3 các \u01b0\u1edbc c\u1ee7a -22 là -22; -11; -2; -1; 1; 2; 11; 22 (ho\u1eb7c vi\u1ebft g\u1ecdn là $\\pm$<\/span>1; $\\pm$<\/span>2; $\\pm$<\/span>11; $\\pm$<\/span>22). Xét<\/p>A. <\/strong>$\\{ \\pm1; \\pm2; \\pm11; \\pm22\\} $<\/span> \u0111úng<\/p>B. <\/strong>$\\{ +1;+ 2; +11; +22\\} $<\/span> sai<\/span> vì \u0111ây ch\u1ec9 là các \u01b0\u1edbc d\u01b0\u01a1ng c\u1ee7a -22, còn thi\u1ebfu các \u01b0\u1edbc âm n\u1eefa<\/p>C. <\/strong>$\\{ -1; -2; -11; -22\\} $<\/span> sai<\/span> vì \u0111ây ch\u1ec9 là các \u01b0\u1edbc âm c\u1ee7a -22, còn thi\u1ebfu các \u01b0\u1edbc d\u01b0\u01a1ng n\u1eefa<\/p>V\u1eady ch\u1ecdn \u0111áp án A. <\/strong>$\\{ \\pm1; \\pm2; \\pm11; \\pm22\\} $<\/span> <\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-26 15:39:18","option_type":"math","len":0},{"id":"6643","post_id":"4584","mon_id":"1158113","chapter_id":"1158128","question":"Tìm x bi\u1ebft: 37 .  (-2) + x = 10 .2 - 10 . 3<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/cat.png\" \/><\/div>","options":["x = -64","x = 64","x = 84"],"correct":"2","level":"2","hint":"Tính 37 . (-2) và 10 . 2 - 10 . 3 tr\u01b0\u1edbc. Sau \u0111ó tìm x theo quy t\u1eafc n\u1ebfu a + x = b thì x = b - a<\/p>","answer":"37 .  (-2) + x = 10 .2 - 10 . 3<\/p>      (-74) + x = 10 . (2 - 3)<\/p>      (-74) + x = -10<\/p>                  x = (-10) - (-74)<\/p>                  x = (-10) + 74<\/p>                  x = 64<\/p>V\u1eady x = 64.<\/p>Ch\u1ecdn \u0111áp án x= 6<\/strong><\/span><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"132","test":"3","date":"2021-08-26 15:41:56","option_type":"txt","len":0}]}