{"article_info":{"article_id":123857,"cat_id":1202,"cat_title":"Vở thực hành Toán 6","publish_time":1669137300,"cat_id2":1202,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_8-0.png","title":"Giải bài 6 trang 57 vở thực hành Toán 6","label":"Bài 6 trang 57","alias":"giai-bai-6-trang-57-vo-thuc-hanh-toan-6","introtext":"Bài 6. Tính tổng:\r\na) (1+3+5+7+9) – (2+4+6+8+10);\r\nb) (666-555+444) – (333 -222 +111).\r\n","content":"<style>\r\n.method-close-icon{position: relative;float: right;top: 6px;transform: rotate(270deg);-ms-transform:rotate(270deg);-moz-transform:rotate(270deg);-webkit-transform:rotate(270deg);-o-transform:rotate(270deg);}\r\n.method-open-icon{position: relative;float: right;top: 6px;}\r\n</style>\r\n<p><strong style=\"font-size: 16px;\">Đề bài</strong></p><p><strong>Bài </strong>6. Tính tổng:</p>\r\n<p>a) (1+3+5+7+9) – (2+4+6+8+10);</p>\r\n<p>b) (666-555+444) – (333 -222 +111).</p><div id=\"pos_end_question\"></div><div style=\"padding-top: 10px;padding-bottom: 2px;margin-bottom: 10px;\"><p class=\"show-detail-method\" style=\"background: #654bc2;text-align: center;border-radius:5px;padding: 10px;margin-bottom: 0px;\" onclick=\"showDetailMethod();\"><strong style=\"font-size: 16px;\">Phương pháp giải - Xem chi tiết</strong><img class=\"method-open-icon\" id=\"method_colapse_icon\" src=\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAGCAYAAAD68A/GAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAA2ZpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMy1jMDExIDY2LjE0NTY2MSwgMjAxMi8wMi8wNi0xNDo1NjoyNyAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wTU09Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9tbS8iIHhtbG5zOnN0UmVmPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvc1R5cGUvUmVzb3VyY2VSZWYjIiB4bWxuczp4bXA9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC8iIHhtcE1NOk9yaWdpbmFsRG9jdW1lbnRJRD0ieG1wLmRpZDoxM0UzREU1OEVDMzZFODExQkQ5N0VEMEYzMTQyQzg0NSIgeG1wTU06RG9jdW1lbnRJRD0ieG1wLmRpZDo5NTFEMTQyQTM3QUExMUU4OTg2OUQ0MzRDMEZGNkVBQiIgeG1wTU06SW5zdGFuY2VJRD0ieG1wLmlpZDo5NTFEMTQyOTM3QUExMUU4OTg2OUQ0MzRDMEZGNkVBQiIgeG1wOkNyZWF0b3JUb29sPSJBZG9iZSBQaG90b3Nob3AgQ1M2IChXaW5kb3dzKSI+IDx4bXBNTTpEZXJpdmVkRnJvbSBzdFJlZjppbnN0YW5jZUlEPSJ4bXAuaWlkOjEzRTNERTU4RUMzNkU4MTFCRDk3RUQwRjMxNDJDODQ1IiBzdFJlZjpkb2N1bWVudElEPSJ4bXAuZGlkOjEzRTNERTU4RUMzNkU4MTFCRDk3RUQwRjMxNDJDODQ1Ii8+IDwvcmRmOkRlc2NyaXB0aW9uPiA8L3JkZjpSREY+IDwveDp4bXBtZXRhPiA8P3hwYWNrZXQgZW5kPSJyIj8+eFCcKwAAAHdJREFUeNpiDA0NvcXAwDAbiLsZsINSIE5lAhIbgbgLiLOxKMqGym1iARJlQCwAxJOB+AsQL4QqioeKzQWZClL4H4gzgJgbKvgVqhDEXgnE6SA1LFDBv1ATQIqXQsW2QsVAcgwsSO75DcShIPdA+WFA/AsmCRBgAO7AGQt+AUtuAAAAAElFTkSuQmCC\"></p>  <div class=\"content_method_content\" style=\"padding: 10px 10px 5px 10px;border: dashed 1px #654bc2;border-top:none;\"><p>Bỏ dấu ngoặc rồi tính một cách hợp lí.</p>  </div>\r\n<script type=\"text/javascript\">\r\n    var is_open =true;\r\n    function showDetailMethod(){\r\n        if(is_open){\r\n            document.querySelector(\".content_method_content\").style.display='none';\r\n            document.getElementById(\"method_colapse_icon\").classList.remove(\"method-open-icon\");\r\n            document.getElementById(\"method_colapse_icon\").classList.add(\"method-close-icon\");\r\n        }else{\r\n            document.querySelector(\".content_method_content\").style.display='block';\r\n            document.getElementById(\"method_colapse_icon\").classList.remove(\"method-close-icon\");\r\n            document.getElementById(\"method_colapse_icon\").classList.add(\"method-open-icon\");\r\n        }\r\n        is_open = !is_open;\r\n    }\r\n</script>\r\n</div><p><strong style=\"font-size: 16px;\">Lời giải chi tiết</strong></p><p>a) (1+3+5+7+9) – (2+4+6+8+10) = 1+3+5+7+9 – 2 – 4 – 6 – 8 – 10</p>\r\n<p>= (1 – 2 ) + (3 – 4 ) + (5 – 6 ) + (7 – 8 ) + (9 – 10 )</p>\r\n<p>= (-1) + (-1)+(-1)+(-1)+(-1) = - 5.</p>\r\n<p>b) (666-555+444) – (333 -222 +111) = 666 – 555 + 444 – 333 + 222 – 111</p>\r\n<p>= (666 – 555) + (444 – 333) + (222 – 111)</p>\r\n<p>= 111 + 111 + 111 = 333.</p>","common_article":"","display_type":1,"vungoi_exam_id":"","article_type":1,"cmt_count":0,"zip_status":1,"last_modified_time":1669137434,"last_zip_time":1669137434,"zip_link":"https://offline.loigiaihay.com/articles/1202/123857/123857_1669137434.zip","picture":"https://img.loigiaihay.com/picture/article/2022/1123/8-0.png","youtube_id":"","video_start_time":"0","quizlet_id":"0","ref_article_id":0,"readmore_display_type":0,"wiki":0,"comment_url":"https://loigiaihay.com/comment/giai-bai-6-trang-57-vo-thuc-hanh-toan-6-c1202a123857.html","origin_url":"https://loigiaihay.com/giai-bai-6-trang-57-vo-thuc-hanh-toan-6-c1202a123857.html","relate_link":[]},"callouts":[],"relate_articles":[],"others_in_cat":[{"article_id":123858,"cat_id":1202,"publish_time":1669137420,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_9-0.png","title":"Giải bài 7 trang 57 vở thực hành Toán 6","alias":"giai-bai-7-trang-57-vo-thuc-hanh-toan-6","introtext":"Bài 7: Rút gọn biểu thức:\r\na) –b+(a+b) – (a – b );\r\nb) (-a +b+c) + (a-b+c) + (a+b-c).\r\n","display_type":1,"article_type":1},{"article_id":123856,"cat_id":1202,"publish_time":1669137240,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_7-0.png","title":"Giải bài 5 (3.23) trang 57 vở thực hành Toán 6","alias":"giai-bai-5-323-trang-57-vo-thuc-hanh-toan-6","introtext":"Bài 5(3.23). Tính giá trị của các biểu thức sau:\r\na) (23 + x) – (56 – x) với x = 7;\r\nb) 25 -  x – ( 29 + y – 8 ) với x = 13, y = 11.\r\n","display_type":1,"article_type":1},{"article_id":123855,"cat_id":1202,"publish_time":1669137120,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_6-0.png","title":"Giải bài 4 (3.22) trang 56 vở thực hành Toán 6","alias":"giai-bai-4-322-trang-56-vo-thuc-hanh-toan-6","introtext":"Bài 4(3.22). Tính một cách hợp lí:\r\na) 232 – (51 +132 – 331);\r\nb) [12 + (- 57)] – [-57 – (-12)].\r\n","display_type":1,"article_type":1},{"article_id":123854,"cat_id":1202,"publish_time":1669137000,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_5-0.png","title":"Giải bài 3 (3.21) trang 56 vở thực hành Toán 6","alias":"giai-bai-3-321-trang-56-vo-thuc-hanh-toan-6","introtext":"Bài 3(3.21). Bỏ dấu ngoặc rồi tính:\r\na) (56 – 27) – ( 11 + 28 – 16);\r\nb) 28 + ( 19 – 28) – ( 32 – 57).\r\n","display_type":1,"article_type":1},{"article_id":123853,"cat_id":1202,"publish_time":1669136880,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_4-0.png","title":"Giải bài 2 (3.20) trang 56 vở thực hành Toán 6","alias":"giai-bai-2-320-trang-56-vo-thuc-hanh-toan-6","introtext":"Bài 2(3.20). Tính một cách hợp lí:\r\na) 21 – 22 + 23 – 24 ;\r\nb) 125 – ( 115 – 99).\r\n","display_type":1,"article_type":1},{"article_id":123852,"cat_id":1202,"publish_time":1669136760,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1123/resize_3-0.png","title":"Giải bài 1 (3.19)  trang 56 vở thực hành Toán 6","alias":"giai-bai-1-319-trang-56-vo-thuc-hanh-toan-6","introtext":"Bài 1(3.19). Bỏ dấu ngoặc và tính các tổng sau:\r\na) – 321 + (-29) – 142 – (- 72 );\r\nb) 214 – ( -36) + (-305).\r\n","display_type":1,"article_type":1},{"article_id":123793,"cat_id":1202,"publish_time":1669087860,"is_link":0,"thumbnail":"https://img.loigiaihay.com/picture/article/2022/1122/resize_3-0.png","title":"Giải câu hỏi trắc nghiệm trang 55 vở thực hành Toán 6","alias":"giai-cau-hoi-trac-nghiem-trang-55-vo-thuc-hanh-toan-6","introtext":"Chọn phương án đúng trong mỗi câu sau:\r\nCâu 1: Bỏ dấu ngoặc trong biểu thức M = (-23) + (-12+5) – (-28+51) ta được:\r\n","display_type":2,"article_type":1}],"event_info":{"title":"Bài 15. Quy tắc dấu ngoặc trang 55, 56, 57 Vở thực hành Toán 6","cat_id":1202,"alias":"bai-15-quy-tac-dau-ngoac-trang-55-56-57-vo-thuc-hanh-toan-6","introtext":"","type":"event","item_id":28965,"item_type":2},"banner":[],"top_banner":"","content_expanded":[],"child_events":[{"id":"28965","title":"Bài 15. 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