Lesson 3: Basic Measurement Systems and Conversions

Launch

Math 10C Module 1 Lesson 3 This section checks to see if you have the prerequisite knowledge and skills to be able to complete this lesson successfully.

Are you Ready?

Complete these questions in your course folder (binder). If you are experiencing difficulty, you may want to use the information and the multimedia in the Refresher section to clarify concepts before completing these exercises.

1. What is the rule for multiplying fractions?

2. Multiply each pair of fractions. Simplify, where possible.

3. What is meant by the expression equivalent fractions?

4. Find the missing term to complete the equivalent fraction.

5. Fill in the blanks:

a. 1 m = __________ cm

b. 1 cm = _________mm

c. 1 km = _________m

d. 1 ft = _________ in

e. 1 yd =_________ ft

Once you have completed these exercises to the best of your ability, use the provided answer link to check your work.

Answers
If you feel comfortable with the concepts covered in the questions, move forward to Discover. If you experienced difficulties or want more practice, use the resources in Refresher to review these important concepts before continuing through the lesson or contact your teacher.

Refresher

Review how to multiply fractions by completing the multimedia piece titled “Multiplying Fractions.”

Try the interactive applet “Equivalent Fractions” to brush up on equivalent fractions.

To navigate to the correct lesson, do the following:

Choose “Fractions and Equivalent Fractions (Home)” in the left-hand column.
Then choose “Topics” in the upper left-hand corner.
Select “4. Equivalent Fractions.”

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This shows an image of detailed blueprints of a building.

Blueprints are the basic planning documents for building houses. On a blueprint, all of the dimensions of a home are drawn to scale. This means that a specific length in the blueprint equals a specific distance in real life. The ratio is the same for all of the lengths. If you know what the ratio or scale is for a blueprint, then you can convert the measures on the diagram into actual measures.

You can convert measurements within the SI or the imperial system. You can even convert measurements between the two systems. To do so, you need to understand the concepts of ratio and proportion.

Watch and Listen

Go to “Exploring Rate, Ratio and Proportion.”

(Make sure you maximize the screen by clicking on the button in the top-right corner of the video.) The website features both a video and an interactive piece. First, view the video. On the left-hand side of the page, select “Exploring Rate, Ratio and Proportion (Video Interactive).” Then try the interactive component to refresh your understanding of ratio and proportion. Click on the “Interactive” button on the right-hand side of the website.

Materials

results from Math Lab: Body Referents in Lesson 1
calculator