Lesson 4 Metric Conversion and Division by Powers of Ten
Let’s convert units.
Warm-up True or False: Divide by a Hundred and a Thousand
Decide if each statement is true or false. Be prepared to explain your reasoning.
Activity 1 Long Jump, Javelin Throw, and Shot Put
Jackie Joyner-Kersee, USA
Sabine John, Germany
Anke Behmer, Germany
Below are some results Jackie Joyner-Kersee recorded in different events in 1988. Complete the table.
Which unit of measure is most helpful when you picture each distance, centimeters or meters? Explain or show your reasoning.
Why do you think that the distances are measured to the nearest centimeter?
Activity 2 Hurdles
The table shows how many meters some students ran during a week. Complete the table to show how many kilometers each student ran.
What patterns do you notice in the table?
Below is Tyler’s strategy to divide a whole number by 10, 100, or 1,000.
Describe to your partner what Tyler means.
(Pause for teacher direction.)
Why does Tyler’s strategy work? Will Tyler’s strategy always work? Explain or show your reasoning.
How many meters are in each measurement?
How does a whole number of millimeters change when you express the measurement in meters?