Luyện tập chung chủ đề 9 - Chu vi, diện tích một số hình phẳng

Home Lớp 3 Toán lớp 3 - Sách Kết nối tri thức Bài 53: Luyện tập chungBài tập cơ bản

{"common":{"save":0,"post_id":"5904","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1289","post_id":"5904","mon_id":"1158530","chapter_id":"1158694","question":"Tính di\u1ec7n tích hình bên d\u01b0\u1edbi, bi\u1ebft m\u1ed7i ô vuông nh\u1ecf có di\u1ec7n tích 1 cm².<\/p><svg height=\"100\" width=\"180\"> <g><title><\/title><rect fill=\"#fff\" height=\"102\" id=\"canvas_background\" width=\"182\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><rect fill=\"#56ffaa\" height=\"40\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"12.0125\" y=\"10.2375\"><\/rect> <rect fill=\"#56ffaa\" height=\"40\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"52.0125\" y=\"10.2375\"><\/rect> <rect fill=\"#56ffaa\" height=\"40\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"12.0125\" y=\"51.2375\"><\/rect> <rect fill=\"#56ffaa\" height=\"40\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"132.0125\" y=\"10.2375\"><\/rect> <rect fill=\"#56ffaa\" height=\"40\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"92.0125\" y=\"51.2375\"><\/rect> <rect fill=\"#56ffaa\" height=\"40\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"1.5\" width=\"40\" x=\"132.0125\" y=\"51.2375\"><\/rect> <\/g> <\/svg><\/span><\/p>","options":["A. <\/strong>5 cm²","B. <\/strong>6 cm²","C. <\/strong>7 cm²"],"correct":"2","level":"1","hint":"\u0110\u1ebfm s\u1ed1 ô vuông.<\/p>","answer":"Vì hình v\u1ebd g\u1ed3m 6 ô vuông, m\u1ed7i ô vuông nh\u1ecf có di\u1ec7n tích 1 cm² nên di\u1ec7n tích c\u1ee7a nó là 6 x 1 = 6 (cm²)<\/p>\u0110áp án \u0111úng là B. <\/strong>6 cm²<\/span><\/p>","type":"choose","extra_type":"cloud","time":"0","user_id":"131","test":"1","date":"2022-06-13 04:16:01","option_type":"txt","len":0},{"id":"1290","post_id":"5904","mon_id":"1158530","chapter_id":"1158694","question":"M\u1ed9t tam giác có \u0111\u1ed9 dài các c\u1ea1nh là 7 cm , 6 cm và 10 cm.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/chim.png\" \/><\/div>Chu vi c\u1ee7a tam giác là<\/p>7 + <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> + 10 =  <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/>  (cm)<\/p>","options":"","correct":["[\"6\",\"23\"]"],"level":"1","hint":"Chu vi c\u1ee7a m\u1ed9t tam giác b\u1eb1ng t\u1ed5ng \u0111\u1ed9 dài ba c\u1ea1nh c\u1ee7a tam giác \u0111ó.<\/p>","answer":"Chu vi c\u1ee7a tam giác là <\/p>7 + 6<\/span> + 10 = 23 <\/span>(cm)<\/p>   \u0110áp s\u1ed1:   23 cm<\/p>Các s\u1ed1 c\u1ea7n \u0111i\u1ec1n là   6<\/strong><\/span>  và  23<\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2022-06-13 04:18:43"},{"id":"1291","post_id":"5904","mon_id":"1158530","chapter_id":"1158694","question":"M\u1ed9t hình vuông có c\u1ea1nh b\u1eb1ng 23 cm. Tính chu vi c\u1ee7a hình vuông \u0111ó.<\/p>Chu vi c\u1ee7a hình vuông là<\/p>23 x <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> (cm)<\/p>","options":"","correct":["[\"4\",\"92\"]"],"level":"1","hint":"Mu\u1ed1n tính chu vi hình vuông, ta l\u1ea5y \u0111\u1ed9 dài m\u1ed9t c\u1ea1nh nhân v\u1edbi 4.<\/p>","answer":"Chu vi c\u1ee7a hình vuông là<\/p>23 x 4 = 92 (cm)<\/p>      \u0110áp s\u1ed1:  92 cm<\/p>Các s\u1ed1 c\u1ea7n \u0111i\u1ec1n là   4<\/strong><\/span>  và   92<\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2022-06-13 04:21:47"}]}