Diện tích của một hình. Xăng-ti-mét vuông

Home Lớp 3 Toán lớp 3 - Sách Kết nối tri thức Bài 51: Diện tích của một hình. Xăng-ti-mét vuôngBài tập nâng cao

{"common":{"save":0,"post_id":"5900","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1242","post_id":"5900","mon_id":"1158530","chapter_id":"1158694","question":"Bi\u1ebft m\u1ed7i ô vuông có di\u1ec7n tích 1 cm², tính t\u1ed5ng di\u1ec7n tích c\u1ee7a hai hình 1 và hình 2 trong hình v\u1ebd.<\/p><svg height=\"250\" width=\"400\"> <g><title><\/title><rect fill=\"#fff\" height=\"252\" id=\"canvas_background\" width=\"402\" 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><g id=\"svg_3\"> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"5.30625\" y=\"4.2375\"><\/rect> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"48.30625\" 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stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"344.30625\" y=\"72.2375\"><\/rect> <\/g> <g id=\"svg_42\"> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_40\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"301.30625\" y=\"115.2375\"><\/rect> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_41\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"344.30625\" y=\"115.2375\"><\/rect> <\/g> <g id=\"svg_45\"> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_43\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"301.30625\" y=\"158.2375\"><\/rect> <rect fill=\"#aad4ff\" height=\"43\" id=\"svg_44\" stroke=\"#000\" stroke-width=\"1.5\" width=\"43\" x=\"344.30625\" y=\"158.2375\"><\/rect> <\/g> <\/g> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_47\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"73.30625\" xml:space=\"preserve\" y=\"243.2375\">1<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_48\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"328.30625\" xml:space=\"preserve\" y=\"236.2375\">2<\/text> <\/g> <\/svg><\/span><\/p>","options":["A. <\/strong>14 cm²","B. <\/strong>12 cm²","C. <\/strong>26 cm²","D. <\/strong>24 cm²"],"correct":"3","level":"3","hint":"L\u1ea5y di\u1ec7n tích c\u1ee7a hình 1 c\u1ed9ng di\u1ec7n tích c\u1ee7a hình 2.<\/p>","answer":"Hình 1 có di\u1ec7n tích 14 cm².<\/p>Hình 2 có di\u1ec7n tích 12 cm².<\/p>T\u1ed5ng di\u1ec7n tích c\u1ee7a hai hình là:  14 cm² + 12 cm² = 26 cm²<\/p>\u0110áp án \u0111úng là  C. <\/strong>26 cm²<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-12 08:25:08","option_type":"txt","len":1},{"id":"1245","post_id":"5900","mon_id":"1158530","chapter_id":"1158694","question":"Bi\u1ebft m\u1ed7i ô vuông có di\u1ec7n tích 1 cm², s\u1eafp x\u1ebfp tên các hình sau theo th\u1ee9 t\u1ef1 di\u1ec7n tích t\u1eeb l\u1edbn \u0111\u1ebfn nh\u1ecf.<\/p><svg height=\"300\" width=\"300\"> <g><title><\/title><rect fill=\"#fff\" height=\"302\" id=\"canvas_background\" width=\"302\" 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=\"#ffaa56\" height=\"35\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"12.30625\" y=\"14.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"47.30625\" y=\"14.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"82.30625\" y=\"14.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" 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y=\"15.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_12\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"245.30625\" y=\"15.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_13\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"12.30625\" y=\"49.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_14\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"47.30625\" y=\"49.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_15\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"82.30625\" y=\"49.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_16\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"175.30625\" y=\"50.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_17\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"210.30625\" y=\"50.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_19\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"10.30625\" y=\"152.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_20\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"45.30625\" y=\"152.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_21\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"80.30625\" y=\"152.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_22\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"10.30625\" y=\"222.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_23\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"45.30625\" y=\"222.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_24\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"80.30625\" y=\"222.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_25\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"172.30625\" y=\"152.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_27\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"242.30625\" y=\"152.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_28\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"172.30625\" y=\"222.2375\"><\/rect> <rect fill=\"#ffaa56\" height=\"35\" id=\"svg_30\" stroke=\"#000\" stroke-width=\"1.5\" width=\"35\" x=\"242.30625\" y=\"222.2375\"><\/rect> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_31\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"53.30625\" xml:space=\"preserve\" y=\"110.2375\">1<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_32\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"205.30625\" xml:space=\"preserve\" y=\"109.2375\">2<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_33\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"47.30625\" xml:space=\"preserve\" y=\"286.2375\">3<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_34\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"217.30625\" xml:space=\"preserve\" y=\"283.2375\">4<\/text> <\/g> <\/svg><\/span><\/p>","options":"","correct":["H\u00ecnh 3","H\u00ecnh 4","H\u00ecnh 1","H\u00ecnh 2"],"level":"3","hint":"","answer":"Hình 1 có di\u1ec7n tích là 6 cm²<\/p>Hình 2 có di\u1ec7n tích là 5 cm²<\/p>Hình 3 có di\u1ec7n tích là 9 cm²<\/p>Hình 4 có di\u1ec7n tích là 7 cm²<\/p>Vì 9 > 7 > 6 > 5 nên tên các hình sau theo th\u1ee9 t\u1ef1 di\u1ec7n tích t\u1eeb l\u1edbn \u0111\u1ebfn nh\u1ecf là:<\/p>Hình 3 ; Hình 4 ; Hình 1; Hình 2<\/strong><\/span><\/p>","type":"reorder","extra_type":"sentence","time":"0","user_id":"131","test":"1","date":"2022-06-12 08:39:31","word":["H\u00ecnh 4","H\u00ecnh 1","H\u00ecnh 2","H\u00ecnh 3"]},{"id":"1247","post_id":"5900","mon_id":"1158530","chapter_id":"1158694","question":"Tính:<\/p>13 cm² + 27 cm² = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> cm²<\/p>92 cm² – 75 cm² = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> cm²<\/p>11 cm² x 5 = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> cm²<\/p>81 cm² : 9 = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> cm²<\/p>","options":"","correct":["[\"40\",\"17\",\"55\",\"9\"]"],"level":"3","hint":"","answer":"13 cm² + 27 cm² = 40 <\/span>cm²<\/p>92 cm² – 75 cm² = 17<\/span> cm²<\/p>11 cm² x 5 = 55<\/span> cm²<\/p>81 cm² : 9 = 9<\/span> cm²<\/p>Các s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t là  40  ;  17  ;  55 ;  9<\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2022-06-12 08:44:23"}]}