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LESSON
3.1
Converting Between
Measurement Systems
How can you use ratios and proportions to convert
measurements?
ADDITIONAL EXAMPLE 1
While making soup, Jenna added 148 milliliters of
broth. About how many fluid ounces does she add
to her soup?
Jenna adds about 5 fluid ounces to her soup.
ADDITIONAL EXAMPLE 2
Wren’s bedroom is 12 feet long × 10 feet wide. She
plans to purchase carpet for the entire room. The
carpet costs $25 per square meter. What will be the
total cost of the new carpet to the nearest cent?
$279.08
3.1 LESSON QUIZ
7.4.E
1. Mindy’s paper cup holds 6 fluid ounces. How
many milliliters is this? Complete the diagram
to solve the problem. 177.6 milliliters
Tell which measure is greater.
2. twenty ounces or twenty grams twenty ounces
3. 60 gallons or 60 liters 60 gallons
4. A bag of potatoes weighs 15 pounds. How
many kilograms is 6.81
this?kg
5. You want to measure the length of a ribbon in
inches. You only have a centimeter ruler. The
length of the ribbon is 16 cm. Is the ribbon
longer or shorter than 16 inches? How many
inches long is it?
shorter than 16 inches; about 6.3 inches
How can you use ratios and proportions to
convert measurements?
Sample answer:
Use a table of equivalent measures to set up a
conversion factor, and multiply by it to convert
one unit to another.
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