Ms. Jamie Scordino 3rd Grade Math Lesson 30: Metric Length Ms. Jamie Scordino 3rd Grade Math

Understanding Metric Length Length is the measurement from one end to the other Metric length is measured in the unit meters.

Types of Meters There are seven different types of meters that we use to measure length. They are kilometer, hectometer, decameter, meter, decimeter, centimeter, and millimeter. We us kilometer, meter, centimeter, and millimeter the most.

The Length of a Kilometer (km) A kilometer is the largest type of meter and it is equal to 1,000 meters or about 3,280 feet. We use kilometers to measure the distance between two points that are very far away. Example: The distance between two cities

The Length of a Meter (m) A meter is equal to about 3.28 feet We use meters to measure objects that are longer then the size of our arm. Examples: Couches, table, length of a room

The Length of a Centimeter (cm) A centimeter is the second smallest type of meter and it is equal to .01 meters or about .03 feet. We use centimeters to measure small objects. Examples: height of a can of soda, length of a hand, pencils

The Length of a Millimeter (mm) A millimeter is the smallest type of meter and it is equal to .001 meter or .0003 feet. We use millimeters to measure very small objects, usually smaller than the size of one ruler. Example: Eraser, paper clip

Metric Staircase Kil Hec Dec Unit Deci Centi Milli

Metric Conversions When you go down the stairs, you x10 Kil Hec Dec Unit Deci Hint: x10 is the same as moving the decimal one place to the right or adding one zero to the end of the number Centi Milli

Length Conversions Kil Hec x10 Dec x10 Meter Deci Centi Example 1 m = 100 cm Milli

Length Conversions x10 Kil x10 x10 Hec Dec Meter Deci Centi Example 1 km = 1,000 meters Milli

Length Conversions Kil Hec Dec Meter x10 Deci Centi Example 5 cm = 50 mm Milli

Length Conversions Kil x10 Hec x10 Dec Meter Deci Centi Example 123 hectometers = 12,300 m Milli

Metric Conversions When you go up the stairs, you divide by 10 Kil Hec Dec Unit Deci Centi Hint: divide by 10 is the same as moving the decimal one place to the left Milli

Length Conversions /10 Kil /10 Hec /10 Dec Meter Deci Centi Example 1 meters = .001 km Milli

Length Conversions Kil Hec Dec Meter /10 Deci Centi Example 5 mm = .5 cm Milli

Length Conversions Kil Hec Dec /10 Meter /10 Deci Centi Example 63 cm = .63 m Milli

Thank you for a great lesson! Your Turn Thank you for a great lesson!