温馨提示：本站仅提供公开网络链接索引服务，不存储、不篡改任何第三方内容，所有内容版权归原作者所有
AI智能索引来源：http://www.edu.com/math-glossary/Length-Definition-Examples
点击访问原文链接

Length: Definition and Example | EDU.COM

进入原网站 导航首页
Length: Definition and Example | EDU.COMEDU.COMResourcesBlogGuidePodcastPlanBackHomesvg]:size-3.5">Math Glossarysvg]:size-3.5">LengthLength: Definition and ExampleTable of ContentsDefinition of Length

Length is a fundamental measurement that identifies the size of an object or the distance between two points. Measuring length is an essential life skill with practical applications in everyday situations. For instance, when we measure the length of a ruler, we're determining how long it is from one end to the other. The skill to accurately measure length has countless applications in various fields, from construction to cooking.

Length can be measured using both standard and non-standard units. Non-standard units, such as handspans or foot-spans, don't have fixed measurements and vary from person to person. Standard units are precisely defined and provide consistent measurements regardless of who is measuring. These standard units fall into two main categories: the metric system (kilometers, meters, centimeters, etc.) and the imperial system (feet, inches, yards). The international standard (S.I.) unit for length is the meter, which serves as the base unit for all length measurements in scientific contexts.

Examples of Length Measurements Example 1: Finding the Length of a Window Using a Ruler Problem:

What is the length of a window (in feet) if a 12-inch ruler is placed 4 times in line?

Step-by-step solution: Step 1, recall the relationship between inches and feet: 12 inches = 1 foot. Step 2, determine how many inches the window measures: The 12-inch ruler is placed 4 times, so we multiply: 12 inches × 4 = 48 inches Step 3, convert this measurement from inches to feet: 48 inches ÷ 12 inches/foot = 4 feet Therefore, the window is 4 feet long. Example 2: Finding Minimum Pencil Box Length for a Pen Problem:

What should be the minimum length (in cm) of a pencil box so that a pen of length 450 mm can fit inside it?

Step-by-step solution: Step 1, identify the conversion factor between millimeters and centimeters: 1 mm = 0.1 cm or 10 mm = 1 cm Step 2, convert the pen's length from millimeters to centimeters: 450 mm = 450 ÷ 10 = 45 cm Step 3, determine the minimum pencil box length: Since the pen is 45 cm long, the pencil box must be at least 45 cm long to accommodate the pen. Therefore, the minimum length of the pencil box should be at least 45 cm. Example 3: Comparing Walking Distances in Different Units Problem:

Olive walked 100 yards from her house to the bookstore and Mark walked 300 feet from his house to a friend's house. Who walked more?

Step-by-step solution: Step 1, we need to convert the measurements to the same unit to make a fair comparison. Let's convert yards to feet using the relationship: 1 yard = 3 feet. Step 2, calculate Olive's distance in feet: 100 yards × 3 feet/yard = 300 feet Step 3, compare the distances: Olive walked 300 feet Mark walked 300 feet Therefore, both Olive and Mark walked the same distance (300 feet). Comments(6)NNatureLover82September 17, 2025I’ve been teaching my kids about measurements, and this page on length was super helpful! The examples made it easy for them to understand both metric and imperial units. Great resource!

MCMs. CarterSeptember 10, 2025I used the length definition and examples to help my kids understand measurements better. It’s so clear and practical, especially with the metric vs imperial units breakdown. Made homework way easier!

MMrAdventure75August 27, 2025I’ve been using this page to help my kids understand length with real-life examples. The mix of metric and imperial systems made it easy to explain measurements they see every day. Super helpful!

NNatureLover75August 20, 2025I’ve used this page to explain length to my kids, and it’s been so helpful! The examples with both metric and imperial units made it easy for them to understand. Great resource!

LLearningMom25August 6, 2025I used this definition to help my kids understand the difference between inches and centimeters while measuring stuff around the house—it made math so much more fun and practical for them!

svg]:px-3 dk:w-auto h-10 dk:h-14 rounded-lg dk:rounded-[15px] px-5 dk:px-7.5 text-sm dk:text-xl text-[#3467FF] bg-white hover:bg-white">Load MoreExplore More TermsBeside60 Degree AngleVolume of PrismX SquaredMilliliters to GallonsRelated FactsView All Math TermsRecommended Interactive LessonsUse Arrays to Understand the Distributive Property3Math3.OA.B.5Divide by 33Math3.OA.C.7Use the Rules to Round Numbers to the Nearest Ten3Math3.NBT.A.1Multiply Easily Using the Distributive Property3Math3.OA.B.5Mutiply by 23Math3.OA.C.7Identify and Describe Addition Patterns3Math3.OA.D.9View All Interactive LessonsRecommended VideosUse The Standard Algorithm To Subtract Within 1002Math2.NBT.B.5Add Fractions With Like Denominators4Math4.NF.B.3aDivide Whole Numbers by Unit Fractions5Math5.NF.B.7bSolve Equations Using Multiplication And Division Property Of Equality6Math6.EE.B.7, 6.EE.B.5Evaluate numerical expressions with exponents in the order of operations6Math6.EE.A.1Solve Percent Problems6Math6.RP.A.3cView All VideosRecommended WorksheetsCompose and Decompose Numbers to 5KMathK.OA.A.3Understand AdditionKMathK.OA.A.1Count Back to Subtract Within 201Math1.OA.C.5, 1.OA.C.6Hundredths4Math4.NF.C.6Divide multi-digit numbers by two-digit numbers5Math5.NBT.B.6Solve Percent Problems6Math6.RP.A.3cView All WorksheetsRecommended Coloring PagesHeart-shaped gift tag with a bow tied at the topPre-K – KAll SubjectsPeriodic table with large, simple squares for each elementPre-K – KAll SubjectsOne large tree with simple leaves and a few grass tufts at the basePre-K – KAll SubjectsPolice station with a playground nearby1 – 2All SubjectsA storm cloud with rain falling on a small umbrella below1 – 2All SubjectsWisteria flower in a botanical garden with detailed surroundings5 – 6All SubjectsView All Coloring PagesRecommended BlogsShould You Guess on the ACT? Smart Test Strategy TipsNovember 11, 2025Is the TI-84 Plus Allowed on the ACT? A Parent's Guide to Calculator RulesOctober 17, 2025Building Statistics Thinking Skills in K-6 StudentsOctober 12, 2025Elementary Common Core Math: A Parent's Guide to Helping Your Child SucceedOctober 11, 2025What Level of Math is on the SAT? A Parent's Guide to Elementary School PreparationOctober 7, 2025Mathematics Mystery: Transform Your Classroom with Detective-Style Math GamesOctober 4, 2025View All Blog PostsQUICK LINKSAbout UsPrivacy PolicyTerms of ServiceTOOLSHomework HelperGuide DesignerPodcast MakerPlan BuilderRESOURCESMath GlossaryEnglish GlossaryEnglish Language ArtsMathematicsScienceBook InsightsFun with WordsBlog© 2025 EDU.COM. All rights reserved.

智能索引记录