Ôn tập chương IV

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

{"common":{"save":0,"post_id":"6799","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1292","post_id":"6799","mon_id":"1159012","chapter_id":"1159021","question":"5 m² 2 dm² = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/> dm²<\/p>","options":["A.<\/strong> 502 dm²","B.<\/strong> 520 dm²","C.<\/strong> 5200 dm²","D.<\/strong> 5020 dm²"],"correct":"1","level":"2","hint":"","answer":"5 m² 2 dm² = 500 dm² + 2 dm² = 502 dm²<\/p>Ch\u1ecdn    A.<\/strong> 502 dm².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 01:02:57","option_type":"txt","len":2},{"id":"1293","post_id":"6799","mon_id":"1159012","chapter_id":"1159021","question":"Tính di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa trong hình.<\/p><svg height=\"230\" width=\"230\"> <g><title><\/title><rect fill=\"#fff\" height=\"232\" id=\"canvas_background\" width=\"232\" 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=\"#ffff00\" height=\"200\" id=\"svg_1\" stroke=\"#56ff56\" stroke-width=\"1.5\" width=\"160\" x=\"58.99999\" y=\"22.24652\"><\/rect> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"18\" id=\"svg_2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"2.99999\" xml:space=\"preserve\" y=\"129.24652\">30 cm<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"18\" id=\"svg_3\" stroke=\"#56ff56\" stroke-width=\"0\" text-anchor=\"start\" x=\"121.99998\" xml:space=\"preserve\" y=\"18.24652\">2 dm<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> 60 cm²","B.<\/strong> 6 dm²","C.<\/strong> 60 dm²","D.<\/strong> 600 dm²"],"correct":"2","level":"2","hint":"","answer":"\u0110\u1ed5i 30 cm = 3 dm<\/p>Di\u1ec7n tích c\u1ee7a mi\u1ebfng bìa là  3 dm x 2 dm = 6 dm²<\/p>Ch\u1ecdn   B.<\/strong> 6 dm².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 01:22:29","option_type":"txt","len":1},{"id":"1294","post_id":"6799","mon_id":"1159012","chapter_id":"1159021","question":"M\u1ed9t t\u1ea5m kim lo\u1ea1i hình vuông có m\u1ed9t c\u1ea1nh b\u1eb1ng 5 dm. Tính di\u1ec7n tích c\u1ee7a t\u1ea5m kim lo\u1ea1i \u0111ó.<\/p><svg height=\"200\" width=\"200\"> <g><title><\/title><rect fill=\"#ffffff\" height=\"202\" 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=\"150\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"150\" x=\"24\" y=\"34.25\"><\/rect> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"66\" xml:space=\"preserve\" y=\"24.25\">5 dm<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> 25 cm²","B.<\/strong> 25 mm²","C.<\/strong> 25 m²","D.<\/strong> 25 dm²"],"correct":"4","level":"2","hint":"","answer":"Di\u1ec7n tích c\u1ee7a t\u1ea5m kim lo\u1ea1i là   5 dm x 5 dm = 25 dm²<\/p>Ch\u1ecdn   D.<\/strong> 25 dm².<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-26 01:24:35","option_type":"txt","len":1}]}