キロメートル：定義と例

Kilometer: Definition and Example | EDU.COM Kilometer: Definition and Example Definition of Kilometer in the Metric System A kilometer is a fundamental unit in the metric system used for measuring geographical distances and length. Abbreviated as "km", one kilometer equals 1,000 meters. This conversion makes it particularly useful for expressing longer distances, as writing large numbers of meters becomes cumbersome. Kilometers serve as the standard unit of measuring length and distance in many countries worldwide, similar to how miles function in the imperial measurement system. The metric system offers various units for measuring length, with kilometers being the largest commonly used unit. Within this system, kilometers can be converted to smaller units including meters, centimeters, and millimeters, as well as to imperial units like miles and feet. These conversions follow specific ratios: 1 kilometer equals 1,000 meters, 100,000 centimeters, or 1,000,000 millimeters. When converting to imperial measurements, 1 kilometer equals approximately 0.621371 miles or 3,280.84 feet. Examples of Kilometer Conversions Example 1: Converting Kilometers to Meters for Daily Walking Distance Problem: Two friends, Henry and Nicole, walk 1.5 kilometers to home every day from school. How many meters do they cover each day? Step-by-step solution: Step 1 , Recall the relationship between kilometers and meters: 1 km = 1,000 m Step 2 , Set up a conversion by multiplying the distance in kilometers by the conversion factor: 1.5 km × \times × 1,000 m/km = ? m Step 3 , Perform the multiplication: 1.5 × \times × 1,000 = 1,500 Step 4 , Henry and Nicole cover 1,500 meters every day. Example 2: Converting Half a Kilometer to Centimeters for a Toddler Racetrack Problem: Tony constructed a racetrack for her two toddlers, which is half a kilometer long. How long is the racetrack in centimeters (cm)? Step-by-step solution: Step 1 , Remember that 1 km = 100,000 cm Step 2 , Understand that we need to find the centimeter equivalent of half a kilometer (0.5 km) Step 3 , Set up the conversion by multiplying: 0.5 km × \times × 100,000 cm/km = ? cm Step 4 , You can think of this as dividing the total centimeters in 1 km: 1 2 \frac{1}{2} 2 1 ​ km = 100 , 000 2 \frac{100,000}{2} 2 100 , 000 ​ cm = 50,000 cm **Step 5, The length of the racetrack is 50,000 centimeters. Example 3: Converting Kilometers to Centimeters for a Cycling Path Project Problem: A city plans to build a new cycling path that is 3.6 kilometers long. How many centimeters is the cycling path? Step-by-step solution: Step 1 , Recall the conversion between kilometers and centimeters: 1 km = 100,000 cm Step 2 , Set up the conversion by multiplying the distance in kilometers by the conversion factor: 3.6 km × \times × 100,000 cm/km = ? cm Step 3 , Perform the multiplication: 3.6 × \times × 100,000 = 360,000 Step 4 , The cycling path is 360,000 centimeters long. Comments( 8 ) T TableTennisPlayerTheo November 6, 2025 This kilometer glossary page is great! It's helped my students grasp distance measurements. Thanks for the useful examples! P PsychologistSimon November 6, 2025 This kilometer glossary page is great! It helped my students grasp the concept easily. Thanks for the practical examples! MC Ms. Carter September 17, 2025 I used the kilometer examples to help my kids understand distance conversions for their homework—it made things so much easier! Love how clear the explanations are. Thanks for this resource! N NatureLover25 September 10, 2025 I’ve used this kilometer definition with my kids to teach them about metric conversions—it’s super clear and the examples really helped them grasp real-world distances. Great resource! N NatureLover85 August 27, 2025 I’ve used this page to explain kilometers to my kids, and the examples made it so easy for them to understand! The conversions to miles and meters were super helpful too. Load More Explore More Terms Ratio Thirds Segment Addition Postulate Division Property of Equality Angle Sum Theorem Solid View All Math Terms Recommended Interactive Lessons View All Interactive Lessons Recommended Videos View All Videos Recommended Worksheets View All Worksheets Recommended Coloring Pages View All Coloring Pages Recommended Blogs How to Help Kids Give Thoughtful Feedback on Artwork November 9, 2025 What Is Tutoring? Understanding the True Tutoring Meaning for K-6 Students October 17, 2025 How Do I Learn a Language Quickly: Brain Training Strategies for K-6 Students October 11, 2025 Essential Qualifications Every K-6 Private Tutor Must Have October 11, 2025 How to Be a Great Tutor: 8 Essential Skills for Success October 10, 2025 Understanding Writer's Block: What It Means for Young Students October 10, 2025 View All Blog Posts