Name 15.6? Essential Question Metric Units of Length How can you convert metric units of length? Geometry and Measurement 4.8., 4.8. lso 4.8. MTHEMTIL PROESSES 4.1., 4.1., 4.1.F Investigate Materials ruler (meter) scissors tape Meters (m), decimeters (dm), centimeters (cm), and millimeters (mm) are all metric units of length. uild a meterstick to show how these units are related.. ut out the meterstick strips.. Place the strips end-to-end to build 1 meter. Tape the strips together.. Look at your meter strip. What patterns do you notice about the sizes of the units? 1 meter is _ times as long as 1 decimeter. 1 decimeter is _ times as long as 1 centimeter. 1 centimeter is _ times as long as 1 millimeter. escribe the pattern you see. Math Idea If you lined up 1,000 metersticks end-to-end, the length of the metersticks would be 1 kilometer. pply What operation could you use to find how many centimeters are in 3 meters? Explain. Module 15 549
Make onnections You can use different metric units to describe the same metric length. For example, you can measure the length of a book as 3 decimeters or as 30 centimeters. Since the metric system is based on the number 10, decimals or fractions can be used to describe metric lengths as equivalent units. Think of 1 meter as one whole. Use your meterstick to write equivalent units as fractions and decimals. 1 meter = 10 decimeters Each decimeter is _ or _ of a meter. 1 meter = 100 centimeters Each centimeter is _ or _ of a meter. omplete the sentence. length of 51 centimeters is _ or _ of a meter. length of 8 decimeters is _ or _ of a meter. length of 82 centimeters is _ or _ of a meter. Math Talk Mathematical Processes Explain how you are able to locate and write decimeters and centimeters as parts of a meter on the meterstick. Share and Show omplete. 1. 2 meters = _ centimeters Metric Units of Length 1 centimeter (cm) = 10 millimeters (mm) 1 decimeter (dm) = 10 centimeters 1 meter (m) = 10 decimeters 1 meter (m) = 100 centimeters 1 meter (m) = 1,000 millimeters 2. 3 centimeters = _ millimeters 3. 5 decimeters = _ centimeters escribe the length in meters. Write your answer as a fraction and as a decimal. 4. 65 centimeters = _ or _ meter 6. 9 decimeters = _ or _ meter 550 5. 47 centimeters = _ or _ meter 7. 2 decimeters = _ or _ meter
Name Problem Solving 8. What s the Error? Julianne s desk is 75 centimeters long. She says her desk is 7.5 meters long. escribe her error. 9. ommunicate Multi-Step lexis is knitting a blanket 2 meters long. Every 2 decimeters, she changes the color of the yarn to make stripes. How many stripes will the blanket have? Explain. Pose a Problem 10. Multi-Step runa was writing a report on pecan trees. She made the table of information to the right. Write a problem that can be solved by using the data. Pose a problem. Pecan Tree verage Measurements Length of nuts 3 cm to 5 cm Height 21 m to 30 m Width of trunk 18 dm Width of leaf 10 cm to 20 cm Solve your problem. Image redits: (cr) Goss Images/lamy escribe how you could change the problem by changing a unit in the problem. Then solve the problem. Module 15 Lesson 6 551
aily ssessment Task Mathematical Processes Fill in the bubble completely to show your answer. 11. length of 1 millimeter is what part of a centimeter? 1 10 1 1,000 1 100 1 10,000 12. Halle buys a spool of thread containing 40 meters of thread. How many decimeters of thread are on the spool? 4,000 decimeters 4 decimeters 40,000 decimeters 400 decimeters 13. Multi-Step Mia plants flowers in a row along the border of her garden. The border is 4 meters long. She plants a flower at one end of the border and then another flower every 10 centimeters. How many flowers does Mia plant? 9 4 41 40 TEXS Test Prep 14. Lucille runs the 50-meter dash in her track meet. How many millimeters long is the race? 500 millimeters 552 50,000 millimeters 5,000 millimeters 500,000 millimeters
Homework and Practice Name Geometry and Measurement 4.8., 4.8. lso 4.8. MTHEMTIL PROESSES 4.1., 4.1., 4.1.F 15.6 Metric Units of Length omplete. 1. 3 meters = centimeters 2. 4 centimeters = millimeters 3. 2 decimeters = centimeters 4. 5 meters = decimeters Metric Units of Length 1 centimeter (cm) = 10 millimeters (mm) 1 decimeter (dm) = 10 centimeters 1 meter (m) = 10 decimeters 1 meter (m) = 100 centimeters 1 meter (m) = 1,000 millimeters 5. 600 centimeters = meters escribe the length in meters. Write your answer as a fraction and as a decimal. 6. 38 centimeters = or meters 7. 91 centimeters = or meters Problem Solving 8. The magazine arbara is reading is 25 centimeters long. She says it is 0.25 decimeters long. Is she correct? Explain. 9. Will is building a fence that is 3 meters long. He is using boards that are 2 decimeters wide. How many boards does he need? Explain. 10. Susan is cutting out squares to make a quilt. Each square is 20 centimeters on a side. How many 20 centimeter squares can she make from a strip 20 centimeters wide and 5 meters long? Explain. Module 15 Lesson 6 553
Lesson heck TEXS Test Prep Fill in the bubble completely to show your answer. 11. What fraction of a meter is 1 centimeter? 1 1,000 1 10 1 10,000 1 100 12. stamp in Sam s collection is 3 centimeters wide. How many millimeters wide is the stamp? 0.3 30 3,000 300 13. Pete s dog is 58 centimeters tall. What is the dog s height in meters? 14. worm is 130 millimeters long. How many centimeters long is the worm? 5.8 meters 0.58 meters 50.8 meters 580 meters 13 13,000 130 0.13 15. Multi-Step How many 50 centimeter pieces of ribbon can asey cut from a roll of ribbon 60 meters long? 554 120 12 300 30 16. Multi-Step sidewalk is 40 meters long. Each section of the sidewalk is 8 decimeters long. How many sections of sidewalk are there? 5 500 50 0.5