METRIC LINEAR UNITS(METERS AND KILOMETERS) GRADE 3 copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Hello, How are you doing? Today, we are going to start a new lesson on Linear units. copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Metric System Metric System – A group of units based on measuring by tens. Various units of metric systems. Kilometer (km) Decimeter (dm) Centimeter (cm) Meter (m) copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Metric units of length Various units of Metric System are related to each other. 1 meter (m) = 100 centimeter (cm) 1 decimeter (dm) = 10 centimeter (cm) 1 meter (m) = 10 decimeter (dm) 1 kilometer (km) = 1,000 meter (m) copyright@Ed2netLearning,Inc

Tools used for measuring length For measuring small distances in centimeters, centimeter scale is used. For measuring larger distances in meters, meter stick or measuring tape is used. copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Meter or Kilometer? Kilometer is larger unit than meter. For measuring larger distances like length of the road, kilometer is used. For measuring small distances like length of the room or door meter is used. copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc A relation Kilometer meter decimeter centimeter X 10 ÷ 10 copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Important Tips To convert meter to kilometers, divide with 1,000. Example – 50 meters = 50/1,000 = 0.050 Km To convert kilometers to meters, multiply with 1,000 Example – 2 Km = 2 x 1,000 = 2,000 m copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Convert 4 km to meters Solution – 4 Km 4 x 1,000 4,000 m copyright@Ed2netLearning,Inc

Which is longer, a measurement of 1 meter of 30 centimeters? Answer - 1 meter copyright@Ed2netLearning,Inc

Which unit would you use to find the length of distance across town? Answer – kilometer (km) copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Which metric unit would you use to find the distance between the front of the classroom and the back of the classroom? Answer – meter (m) copyright@Ed2netLearning,Inc

How many meters are there in 3000 km? Answer – 3000 x 1000 m copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Fill in the Blanks 6 Km = --- m 200 m = ---- km Answer – 6000 0.2 or 2/10 copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc ASSESSMENT copyright@Ed2netLearning,Inc

1. What is the estimated height of the door? 2 km 2 cm 2 dm copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 2. Rock and his family are playing croquet. Rock hits the ball 8 m. How many centimeters did he hit the ball? 80 cm 0.80 cm 800 cm copyright@Ed2netLearning,Inc

What number makes the equation true? 600 cm =  m Answer - 6 copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 4. Distance between two Stations A and B is 5 Km. How much is the distance in meters? Answer – 5,000 m copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 5. Express 5.36 m to km. Answer – 5.36 /1000 = 0.00536 copyright@Ed2netLearning,Inc

6. Compare using >, < or = 9 km  900 m 3.2 km  320 m Answer – > = copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 7. Elise covered 4 km by bus and 200 m by bus to reach his school. How far is his school from home? Answer – 4200 m copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 8. Which is bigger unit? meter Centimeter Kilometer decimeter copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc 9. Two ropes A and B have length of 2,000 m and 2 km respectively. Which rope is longer? Answer – Both ropes are equal copyright@Ed2netLearning,Inc

10. What is the estimated height of the tree? 30 km 30 cm copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Recap Metric system Metric units of length Tools used for measuring length Meter or kiilometer? Solved Examples Practice problems copyright@Ed2netLearning,Inc

copyright@Ed2netLearning,Inc Well Done! Now Revise worksheets on the Lesson. copyright@Ed2netLearning,Inc