Copyright@Ed2netLearning,Inc1 METRIC LINEAR UNITS(METERS AND KILOMETERS) GRADE 3

copyright@Ed2netLearning,Inc 1

METRIC LINEAR UNITS(METERS AND

KILOMETERS)

GRADE 3


Hello, How are you doing?Today, we are going to start a new lesson on

Linear units.


Metric SystemMetric System – A group of units based on

measuring by tens.

Various units of metric systems.• Kilometer (km)• Decimeter (dm)• Centimeter (cm)• Meter (m)


Metric units of lengthVarious 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)


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.


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.


A relation

Kilometer

meter

decimeter

centimeter

÷ 10 X 10


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


Convert 4 km to metersSolution – 4 Km

4 x 1,0004,000 m


Which is longer, a measurement of 1 meter of 30 centimeters?Answer - 1 meter


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


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)


How many meters are there in 3000 km?Answer – 3000 x 1000 m


Fill in the Blanksa) 6 Km = --- mb) 200 m = ---- kmAnswer – a) 6000b) 0.2 or 2/10


ASSESSMENT


1. What is the estimated height of the door? a) 2 mb) 2 kmc) 2 cmd) 2 dm


2. Rock and his family are playing croquet. Rock hits the ball 8 m. How many centimeters did he hit the ball?

a) 80 cmb) 0.80 cmc) 800 cm


3. What number makes the equation true?600 cm = m

Answer - 6


4. Distance between two Stations A and B is 5 Km. How much is the distance in meters?

Answer – 5,000 m


5. Express 5.36 m to km.Answer – 5.36 /1000

= 0.00536


6. Compare using >, < or =a) 9 km 900 m

b) 3.2 km 320 m

Answer –

a) >

b) =


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


8. Which is bigger unit?a) meterb) Centimeterc) Kilometerd) decimeter


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


10. What is the estimated height of the tree?a) 30 mb) 30 kmc) 30 cm


Recap Metric system Metric units of length Tools used for measuring length Meter or kiilometer? Solved Examples Practice problems


Well Done!Now Revise worksheets on the Lesson.

Documents

Copyright@Ed2netLearning,Inc1 METRIC LINEAR UNITS(METERS AND KILOMETERS) GRADE 3