[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-555974-105":59,"doc-detail-555974-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","measuring-lengths-precision-and-errors","Measuring Lengths - Precision and Errors","","This educational worksheet for grade 5 students focuses on the fundamental concepts of measurement, precision, and uncertainty. Through practical examples involving ruler readings of a safety pin and real-world scenarios like measuring fabric, the document introduces the importance of identifying instrument precision based on scale divisions. It further teaches students about measurement errors and the use of the plus-minus notation to indicate a range of possible lengths, ensuring a clear understanding that physical measurements inherently possess uncertainty. The provided answer key allows students to verify their comprehension of why certain rulers are more precise and how to calculate minimum and maximum values when given a measurement with a specific margin of error. This resource is an excellent tool for developing scientific and mathematical literacy regarding measurement techniques in elementary-level curricula.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/measuring-lengths-precision-and-errors/555974/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/measuring-lengths-precision-and-errors/555974.png","ImageObject",300,407,{"name":92,"@type":93},"Indoniesian Boy","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-07","2026-10-12",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is Ruler B considered more precise than Ruler A?","Question",{"text":112,"@type":113},"Ruler B is more precise because it features smaller divisions on its scale, allowing for a more granular measurement.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why do physical measurements inherently contain uncertainty?",{"text":117,"@type":113},"All physical measurements contain some level of uncertainty because no measuring tool or human observation is perfectly exact.",{"name":119,"@type":110,"acceptedAnswer":120},"What does the notation 248 +/- 2 mm represent for a fabric measurement?",{"text":121,"@type":113},"This notation indicates that the measurement is not exact and that the actual length of the fabric falls within a range between 246 mm and 250 mm.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},555974,1792979045,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":24,"preview_page_count":4},962090760608,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Measuring lengths, precision & errors  \nGrade 5 Measurement Worksheet  \n\n| Ruler A | |\n| --- | --- |\n| \u003Cbr>\u003Cbr>0 1 2 3 4 5 6 7 8 9 10 cm\u003Cbr>How long is the safety pin?   |  |\n\n\n| Ruler B | |\n| --- | --- |\n| \u003Cbr>0\u003Cbr>cm\u003Cbr>\u003Cbr>1 2 3 4 5 6 7 8 9 10\u003Cbr>How long is the safety pin?   |  |\n\n1. Which ruler is more precise, A or B? Why?  \n\n| 2. Are your measurements exact? Explain. |\n| --- |\n| 3. A seamstress measured a small cut pattern fabric for her project and wrote the measurement as 248 +/ -2 mm long. Why did the seamstress write the length like that? |\n| 4. What do you think the minimum length of the fabric is? |\n| 5. What do you think the maximum length of the fabric is? |\n\nAnswers  \nRuler A  \nHow long is the safety pin? 5 3/10 cm  \nRuler B  \nHow long is the safety pin? Between 5 and 51/2 cm  \n1. Which ruler is more precise, A or B? Why?  \nRuler B is more precise because it has smaller divisions.  \n2. Are your measurements exact? Explain.  \nAll physical measurements contain some uncertainty.  \n3. A seamstress measured a small cut pattern fabric for her project and wrote the measurement as 248 +/ -2 mm long. Why did the seamstress write the length like that?  \nThe seamstress knew that her measurement was not exact, and wanted to show that the length was between 246 and  \n250 mm  \n4. What do you think the minimum length of the fabric is?  \n246 mm  \n5. What do you think the maximum length of the fabric is?  \n250 mm","cbCaicQwWFwy7W5Q","https://ap.wps.com/l/cbCaicQwWFwy7W5Q","pdf",69144,"English","# Measuring Lengths\n## Precision and Measurement Uncertainty\n## Practical Exercises","[{\"question\":\"Why is Ruler B considered more precise than Ruler A?\",\"answer\":\"Ruler B is more precise because it features smaller divisions on its scale, allowing for a more granular measurement.\"},{\"question\":\"Why do physical measurements inherently contain uncertainty?\",\"answer\":\"All physical measurements contain some level of uncertainty because no measuring tool or human observation is perfectly exact.\"},{\"question\":\"What does the notation 248 +/- 2 mm represent for a fabric measurement?\",\"answer\":\"This notation indicates that the measurement is not exact and that the actual length of the fabric falls within a range between 246 mm and 250 mm.\"}]","Measuring Lengths - Precision and Errors | PDF",1791795729]