Phép nhân số nguyên - Bài tập dễ

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Bài 16: Phép nhân số nguyênBài tập cơ bản

{"common":{"save":0,"post_id":"4509","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6176","post_id":"4509","mon_id":"1158113","chapter_id":"1158128","question":"Tích c\u1ee7a phép nhân sau là bao nhiêu?<\/p>(-11).18<\/span><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/do-an-danh-so\/oranges.png\" \/><\/div>","options":["198","-198","-39"],"correct":"2","level":"1","hint":"Mu\u1ed1n nhân hai s\u1ed1 nguyên khác d\u1ea5u ta nhân ph\u1ea7n s\u1ed1 t\u1ef1 nhiên c\u1ee7a hai s\u1ed1 \u0111ó v\u1edbi nhau r\u1ed3i \u0111\u1eb7t d\u1ea5u tr\u1eeb " - " tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>","answer":"Ta có: (-11).18 = - (11.18) = -198<\/p>V\u1eady \u0111áp án là  -198.<\/span><\/strong><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"132","test":"3","date":"2021-08-21 12:53:21","option_type":"txt","len":0},{"id":"6178","post_id":"4509","mon_id":"1158113","chapter_id":"1158128","question":"N\u1ed1i phép tính v\u1edbi k\u1ebft qu\u1ea3 \u0111úng c\u1ee7a nó.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd tiny\" src=\"\/data\/library\/do-an\/banh3.png\" \/><\/div>","options":[["12 . (-13)","(-11) . 77","(-5) . (-42)"],["210","-156","-847"],["-156","-847","210"]],"correct":[2,0,1],"level":"1","hint":"Mu\u1ed1n nhân hai s\u1ed1 nguyên khác d\u1ea5u ta nhân ph\u1ea7n s\u1ed1 t\u1ef1 nhiên c\u1ee7a hai s\u1ed1 \u0111ó v\u1edbi nhau r\u1ed3i \u0111\u1eb7t d\u1ea5u tr\u1eeb " - " tr\u01b0\u1edbc k\u1ebft qu\u1ea3 nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>Mu\u1ed1n nhân hai s\u1ed1 nguyên cùng d\u1ea5u ta nhân ph\u1ea7n s\u1ed1 t\u1ef1 nhiên c\u1ee7a hai s\u1ed1 \u0111ó v\u1edbi nhau.<\/p>","answer":"12 . (-13) = - (12. 13) = -156<\/p>(-11) . 77 = - (11. 77) = -847<\/p>(-5) . (-42) = 5. 42 = 210<\/p>V\u1eady ta n\u1ed1i nh\u01b0 sau: <\/p>12 . (-13)<\/span><\/strong> n\u1ed1i v\u1edbi -156<\/strong><\/span><\/p>(-11) . 77<\/strong><\/span> n\u1ed1i v\u1edbi -847<\/strong><\/span><\/p>(-5) . (-42) <\/strong><\/span>n\u1ed1i v\u1edbi 210<\/strong><\/span><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"132","test":"3","date":"2021-08-21 13:01:05"},{"id":"6179","post_id":"4509","mon_id":"1158113","chapter_id":"1158128","question":"K\u1ebft qu\u1ea3 c\u1ee7a phép tính sau là bao nhiêu?<\/p>(-8).(-125)<\/p>","options":["1000","-1000","133","-133"],"correct":"1","level":"1","hint":"Mu\u1ed1n nhân hai s\u1ed1 nguyên cùng d\u1ea5u ta nhân ph\u1ea7n s\u1ed1 t\u1ef1 nhiên c\u1ee7a hai s\u1ed1 \u0111ó v\u1edbi nhau.<\/p>","answer":"(-8).(-125) = 8 . 125 = 1000<\/p>V\u1eady \u0111áp án là 1000<\/span><\/strong>.<\/p>","type":"choose","extra_type":"star","time":"0","user_id":"132","test":"3","date":"2021-08-21 13:09:51","option_type":"txt","len":0}]}