Ôn tập chương IV

Home Lớp 4 Toán lớp 4 - Sách Kết nối tri thức Bài 21 - Ôn tập chương IVBài tập nâng cao

{"common":{"save":0,"post_id":"6800","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1312","post_id":"6800","mon_id":"1159012","chapter_id":"1159021","question":"M\u1ed9t m\u1ea3nh \u0111\u1ea5t g\u1ed3m hai ph\u1ea7n, m\u1ed9t hình vuông và m\u1ed9t hình ch\u1eef nh\u1eadt v\u1edbi các kích th\u01b0\u1edbc nh\u01b0 hình. Tính di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t \u0111ó.<\/p><svg height=\"180\" width=\"270\"> <g><title><\/title><rect fill=\"#fff\" height=\"182\" id=\"canvas_background\" width=\"272\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_8\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><rect fill=\"#fff\" height=\"80\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"80\" x=\"45.99999\" y=\"94.24652\"><\/rect> <rect fill=\"#fff\" fill-opacity=\"null\" height=\"150\" id=\"svg_2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\" width=\"90\" x=\"125.99998\" y=\"24.24652\"><\/rect> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"59.99999\" xml:space=\"preserve\" y=\"86.24652\">8 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"2.99999\" xml:space=\"preserve\" y=\"142.24652\">8 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"153.99998\" xml:space=\"preserve\" y=\"20.24652\">9 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1,0,0,1.028393261388132,0,-4.319456365823303) \" x=\"217.99998\" xml:space=\"preserve\" y=\"111.05326\">15 m<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> 64 m²","B.<\/strong> 135 m²","C.<\/strong> 199 m²","D.<\/strong> 198 m²"],"correct":"3","level":"3","hint":"","answer":"Di\u1ec7n tích c\u1ee7a ph\u1ea7n \u0111\u1ea5t hình vuông là  8 m x 8 m = 64 m²<\/p>Di\u1ec7n tích c\u1ee7a ph\u1ea7n \u0111\u1ea5t hình ch\u1eef nh\u1eadt là  15 m x 9 m = 135 m²<\/p>Di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t là   64 + 135 = 199 m²<\/p>Ch\u1ecdn    C.<\/strong> 199 m².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 02:12:59","option_type":"txt","len":1},{"id":"1315","post_id":"6800","mon_id":"1159012","chapter_id":"1159021","question":"Có hai m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt. M\u1ea3nh \u0111\u1ea5t A có chi\u1ec1u dài là 16 m, chi\u1ec1u r\u1ed9ng là 8 m. M\u1ea3nh \u0111\u1ea5t B có chi\u1ec1u dài là 18 m, chi\u1ec1u r\u1ed9ng là 4 m. H\u1ecfi di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t nào l\u1edbn h\u01a1n và l\u1edbn h\u01a1n bao nhiêu mét vuông?<\/p><svg height=\"220\" width=\"240\"> <g><title><\/title><rect fill=\"#fff\" height=\"222\" id=\"canvas_background\" width=\"242\" 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=\"#d4ffaa\" height=\"80\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"160\" x=\"50\" y=\"29.25\"><\/rect> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"124\" xml:space=\"preserve\" y=\"75.25\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"99\" xml:space=\"preserve\" y=\"22.25\">16 m<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"3\" xml:space=\"preserve\" y=\"73.25\">8 m<\/text> <rect fill=\"#aaffd4\" height=\"40\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\" width=\"180\" x=\"52\" y=\"159.25\"><\/rect> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"135\" xml:space=\"preserve\" y=\"184.25\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"116\" xml:space=\"preserve\" y=\"154.25\">18 m<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"6\" xml:space=\"preserve\" y=\"188.25\">4 m<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 56 m².","B.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 56 m².","C.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 60 m².","D.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 50 m²."],"correct":"1","level":"3","hint":"","answer":"Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A là  16 m x 8 m = 128 m².<\/p>Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B là  18 m x 4 m = 72 m².<\/p>V\u1eady di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n s\u1ed1 mét vuông là  128 – 72 = 56 m².<\/p>Ch\u1ecdn   A.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 56 m².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 02:19:49","option_type":"txt","len":3},{"id":"1317","post_id":"6800","mon_id":"1159012","chapter_id":"1159021","question":"Có hai m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt. M\u1ea3nh \u0111\u1ea5t A có chi\u1ec1u dài là 15 m, chi\u1ec1u r\u1ed9ng là 7 m. M\u1ea3nh \u0111\u1ea5t B có chi\u1ec1u dài là 12 m, chi\u1ec1u r\u1ed9ng là 9 m. H\u1ecfi di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t nào l\u1edbn h\u01a1n và l\u1edbn h\u01a1n bao nhiêu mét vuông?<\/p><svg height=\"250\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"252\" id=\"canvas_background\" width=\"202\" 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=\"#ffffaa\" height=\"70\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"150\" x=\"41\" y=\"29.25\"><\/rect> <rect fill=\"#ffaaff\" height=\"90\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"120\" x=\"57\" y=\"144.25\"><\/rect> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"109\" xml:space=\"preserve\" y=\"66.25\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"107\" xml:space=\"preserve\" y=\"193.25\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"93\" xml:space=\"preserve\" y=\"23.25\">15 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"4\" xml:space=\"preserve\" y=\"62.25\">7 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"96\" xml:space=\"preserve\" y=\"137.25\">12 m<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"18\" xml:space=\"preserve\" y=\"198.25\">9 m<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 3 m².","B.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 3 m².","C.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 6 m².","D.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 5 m²."],"correct":"2","level":"3","hint":"","answer":"Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t A là  15 m x 7 m = 105 m².<\/p>Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B là  12 m x 9 m = 108 m².<\/p>V\u1eady di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n s\u1ed1 mét vuông là  108 – 105 = 3 m².<\/p>Ch\u1ecdn   B.<\/strong> Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t B l\u1edbn h\u01a1n và l\u1edbn h\u01a1n 3 m².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 02:22:43","option_type":"txt","len":3}]}