ミリメートル | 意味、換算、測定 - レッスン | Study.com

Millimeter | Meaning, Conversion & Measurement - Lesson | Study.com Contributors: Jeanne Rast, T.J. Hoogsteen, Christianlly Cena Author Author: Jeanne Rast Jeanne Rast has taught Mathematics in grades 7-12 and college for over 30 years. She has a Ph.D. in Math Education and a M.Ed. in Math both from Georgia State University, as well as a B.A. in Math from The University of the South. Dr. Rast is a certified teacher for the State of Georgia for Mathematics grades 7-12 Instructor Instructor: T.J. Hoogsteen T.J. is currently a grade 5 teacher and Vice-Principal. He has a master's degree in Educational Administration and is working toward an Ed.D. in Educational Leadership. Expert Contributor Expert Contributor: Christianlly Cena Christianlly has taught college Physics, Natural science, Earth science, and facilitated laboratory courses. He has a master's degree in Physics and is currently pursuing his doctorate degree. What is a millimeter? Learn to measure millimeters, how many millimeters in a meter and other units of measurement, and explore examples of millimeter conversions. Table of Contents What is a Millimeter? Millimeter Measurement How Many Millimeters in a Meter? Millimeter Conversion Examples Lesson Summary Show FAQ Activities What is 1 mm equal to in inches? Millimeters is a unit of measure of length in the metric system. Inches are a unit of length in the U.S. customary unit. There are approximately 25.4 millimeters in 1 inch. Therefore 1 mm is approximately 03937007874, or about .0394 inches. What is MM used for? Millimeters are used to precisely measure the length of small or narrow objects. It is the smallest unit of length on a metric ruler or stick. The metric system is used internationally, especially by scientists. What size is a millimeter? A millimeter is the smallest unit of length marked on a metric ruler. A millimeter is one-tenth of a centimeter and it takes 2.54 cm to equal one inch. Millimeter: Word Problem In this activity, you will check your knowledge of how to convert millimeters to other metric units. Directions For this activity, print or copy this page on a blank piece of paper. Then, carefully read the given word problems and provide a solution. 1.) Ken needs to buy two yards of red fabric to make a costume for a school play. The store only has six feet of red fabric left. Will it be enough for Ken to make his costume? 2.) How many bracelets can be made from three meters of string if each bracelet needs thirty millimeters of string? 3.) You need a table that has a height of at least sixty centimeters. You find one at a shop with six hundred twenty-five millimeters. Convert the unit from centimeters to millimeters if this table will suffice your needs. 4.) A stick that is thirty inches long has to be cut into six smaller pieces. How many millimeters will each smaller piece of the stick measure? Answer Key 1.) 1 yard = 914.4 millimeters, 1 foot = 304.8 millimeters 914.4 / 304. 8 = 3 feet This means that 1 yard = 3 feet 3 x 2 = 6 feet Yes. Ken will be able to make his costume with 6 feet of fabric. 2.) 1 meter = 1000 millimeters 1000 x 3 = 3000 millimeters 3000 / 30 = 100 100 bracelets can be made. 3.) 1 centimeter = 10 millimeters 625 / 10 = 62.5 The table has a height of 62. 5 centimeters and fits my needs. 4.) 1 inch = 25.4 millimeters 30 x 25.4 = 762 millimeters 762 / 6 = 127 millimeters Each stick will be 127 millimeters long. Create an account Lesson Transcript An error occurred trying to load this video. Try refreshing the page, or contact customer support. You must c C reate an account to continue watching Register to view this lesson Are you a student or a teacher? I am a student I am a teacher Create Your Account To Continue Watching As a member, you'll also get unlimited access to over 88,000 lessons in math, English, science, history, and more. 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Your next lesson will play in 10 seconds 0:04 What Is a Millimeter? 1:09 Imperial vs Metric 1:50 Examples 2:28 Lesson Summary Quiz Course View Video Only Save Timeline 39K views Recommended lessons and courses for you Related Lessons Related Courses Distance Formula in Geometry | Definition, Derivation & Use 4:55 Linear Measurements in Metric & English Units: Lesson for Kids 4:00 Maps with Decimal Distances 4:17 U.S. Customary Units to Measure Distance 3:53 Length Lesson for Kids: Definition & Measurement 3:12 How to Use a Ruler in Inches 3:11 How to Read Metric Rulers 4:15 English System of Measurement | List, Advantages & Disadvantages 9:27 Measurement Lesson for Kids 2:41 Measurement | Definition, Principles & Concept 3:11 Selecting Appropriate Measurement Units to Solve Problems 4:20 Reading Measuring Scales | Overview, Interpretation & Uses 5:58 How to Perform Basic Operations with Measurements 8:45 Practice with the Metric System, Significant Figures & Scientific Notation 5:52 Converting 1 eV to J 6:30 How to Estimate Measurements of Distance: Lesson for Kids 3:08 Standard & Nonstandard Measurements | Definition & Examples 5:07 How to Estimate the Weight of Objects: Lesson for Kids 4:03 How to Measure & Compare Weights: Lesson for Kids 4:16 Aspect Ratio | Definition, Formula & Examples 3:29 Elementary Math: Lesson Plans & Resources MEGA Elementary Education Study Guide and Test Prep Math Review for Teachers: Study Guide & Help Common Core Math - Number & Quantity: High School Standards Common Core Math - Algebra: High School Standards Common Core Math - Statistics & Probability: High School Standards Common Core Math - Geometry: High School Standards Common Core Math - Functions: High School Standards Common Core Math Grade 8 - Expressions & Equations: Standards Common Core Math Grade 8 - Functions: Standards Elementary Math: Lesson Plans & Resources MEGA Elementary Education Study Guide and Test Prep Math Review for Teachers: Study Guide & Help Common Core Math - Number & Quantity: High School Standards Common Core Math - Algebra: High School Standards Common Core Math - Statistics & Probability: High School Standards Common Core Math - Geometry: High School Standards Common Core Math - Functions: High School Standards Common Core Math Grade 8 - Expressions & Equations: Standards Common Core Math Grade 8 - Functions: Standards What is a Millimeter? A millimeter is a unit of length measurement in the Standard International (SI) or "metric" system. A millimeter is the smallest unit of measurement of length on a standard ruler in the metric system. It is abbreviated mm . There are 10 mm in 1 centimeter. Millimeters are the smallest unit of length. Why are Millimeters Used? Like the decimal system, the metric system is based on multiples of 10. In an attempt to standardize measurement systems around the world, the metric system was created in the late 18th century in France. All metric measurements of mass, volume, and length are based on a ratio used to measure water: a milliliter is equivalent to 1 cubic centimeter of water at its highest density, which weighs 1 gram. So, a millimeter is one tenth of the length of one side of 1 gram of water in cube form. Millimeters are useful for measuring very small things such as the width of a guitar string or the clipper size for cutting hair. To unlock this lesson you must be a Study.com member Create an account Millimeter Measurement A metric ruler or measuring tape is required to measure in millimeters. Millimeters are the smallest increment on a metric ruler. Usually the numbers on a tape measure or meter stick mark the centimeters (the numbers 1, 2. 3 are marked for the centimeters). The millimeters are so small that they are not labeled. Instead, they are only indicated by the shortest mark as shown in the image below. Metric ruler with cm numbered. Mm are the smallest marks. Note that there are 10 smaller marked spaces before and after each centimeter number. Therefore, when finding the measurement of an object in mm, every whole number increment on the ruler is 10 mm. For example, an object that measures 3 centimeters also measures 30 millimeters. One advantage of using millimeters is the precision of the measurement. Every space between the smallest marks is 1 mm. For measuring a length in millimeters, follow these steps: Place the left end of the object on the 0 mark of the ruler. Count the spaces (not the lines) from the 0 to the end of the object or just before the end of the object. If the object is long, to count the spaces more quickly, the number of centimeter markings before the end of the object can be multiplied by 10 Example 1 A 4 mm line segment The 0 mark of the ruler is placed at the left end of the line segment. There are 4 spaces to the end of the segment, so it is 4 mm long. Example 2 The diameter of the tack is 10 mm. The middle of the tack is lined up at the 0 on the ruler. The right center is at the 1, which means it is 10 mm long. Example 3 The staple is 12 mm long. The left end of the staple is in line with the 0 on the ruler. Since the end of the staple is 2 spaces past the 1 on the ruler, the length is 10 mm + 2 mm or 12 mm long. To unlock this lesson you must be a Study.com member Create an account How Many Millimeters in a Meter? The metric system is based on units of length that differ by multiples of 10. The progression of metric units from smallest to largest are millimeter (mm) centimeter (cm) decimeter (dm) meter (m) decameter (dam) hect