1-11 Unit Multipliers

1-11 Unit Multipliers

Introduced in Lesson 50

Warm Up

Which one does not belong? Why?

Open Ended

Explain which one does not belong and why

Notebook: Learning & Habit Objectives

Learning: I will use a unit multiplier to convert units

Habit: I will write my steps on paper to stay organized

Success Criteria

• I can write a unit equality fact as a ratio equal to one

• I can use the multiiplicative identity to convert units

Notebook: The Unit Multiplier

A unit multiplier is a ratio of two equal units of measure. Since the measures are equal, the value of the ratio is one.
Examples

 $\frac{1\ ft}{12\ in}$           $\frac{100\ cm}{1\ m}$            $\frac{1\ m}{100\ cm}$  

Notebook: Using the Multiplicative Identity to Convert Units (will do this in class)

Use a unit multiplier to convert 100 ft to inches

Multiple Choice

Select the correct unit multiplier to convert 42 m to cm

• $\frac{42\ m}{100\ cm}$

• $\frac{100\ cm}{1\ m}$

• $\frac{1\ m}{100\ cm}$

Multiple Choice

Convert 42 m to cm

• .42 cm

• 4.2 cm

• 420 cm

• 4200 cm

Open Ended

Exit Ticket: Convert 4 yds to ft. Then convert from ft to in. Explain your steps.