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7th Grade Math / Lesson 2: Metric Units

METRIC UNITS
What will we be learning in this lesson?


  • In this lesson, you will review measurements in the Metric system.

    Vocabulary words are found in this purple color throughout the lesson. Remember to put these in your notebook.


METRIC UNITS


  • Measurements come in many forms. You can measure lengths, volumes, even weights.
  • Each of these attributes have their own units.
  • Lengths can be measured in meters.
  • Volumes can be measured in liters.
  • Weights can be measured in grams.
  • This section will review changing units within the measuring system.


METRIC UNITS
Lengths


  • Here is a table that shows the equivalent units of length. Use this table to change the following measurements. This table indicates that
    1 km = 1000 m , 1 hm = 100 m , 1 dam = 10 m , 1 mm = .0001 m, and so on


    5.9 m = _____ km         125 mm = _____ m

    425 km = _____ m        55 cm = ______ mm

  • These conversions are simply done by moving decimal points.


METRIC UNITS
Lengths



    Start with the given measurement. Count the number of places you move to get to the new measurement. That is how many times you move the decimal point. And it is also the direction that you move it.

    5.9 m = _____ km         Start at meters (because that is the measure- ment that you are given). To get to kilometer, you move 3 places to the left.

    Move the decimal 3 places to the left.

    So 5.9 m = .0059 km


METRIC UNITS
Lengths



    125 mm = _____ m         Start at millimeters (because that is the measurement that you are given). To get to meter, you move 3 places to the left.

    So 125 mm = 125,000 m


METRIC UNITS
Lengths



    425 km = _____ m Start at kilometers (because that is the measurement that you are given). To get to meter, you move 3 places to the right.

    Move the decimal 3 places to the right.

    So 425 km = .425 m


METRIC UNITS
Lengths



    55 cm = _____ mm Start at centimeters (because that is the measurement that you are given). To get to millimeter, you move 1 place to the right.

    So 55 cm = 5.5 m


METRIC UNITS
Volume/Mass (weight)


  • There are different units used for volume and mass compared to length.
  • Length uses meters, volume uses liters, and weight uses grams.
  • The tables below show the equivalencies for liters and grams.
  • The conversions are done the same as they are with meters - by moving the decimal points.


  • Can you set up the convert from one unit to another in the metric system?

  • Be sure to go back to your classroom to get any homework assignments or other activities you need to attend to.