Post on 01-Jan-2016
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Main Idea and New Vocabulary
NGSSS
Key Concept: Measurement Conversions
Example 1: Convert Measures
Key Concept: Measurement Conversions
Example 2: Convert Between Systems
Example 3: Convert Between Systems
Five-Minute Check
• Convert customary and metric units of length, weight or mass, capacity, and time.
• unit ratio
MA.8.G.5.1 Compare, contrast, and convert units of measure between different measurement systems (US customary or metric (SI)) and dimensions including temperature, area, volume, and derived units to solve problems.
Also addresses MA.8.A.6.4
Convert Measures
SHIPPING Cristos is shipping a package of model train parts. The package weighs 900 grams. What is the weight of the package in kilograms?
Since 1 kg = 1,000 grams,
multiply by .
Divide out common units, leaving the desired unit, kilograms.
Convert Measures
Answer: The package weighs 0.9 kilogram.
Multiply.
A. 15,840 ft
B. 10,560 ft
C. 5,280 ft
D. 3,000 ft
RUNNING Jacob ran a race that was 3 miles long. How long was the race in feet?
Complete the conversion. Round to the nearest hundredth.10 mi ≈ __ km
Convert Between Systems
Method 1Use 1 km ≈ 0.621 mi.
Since 1 km ≈ 0.621 mi,
multiply by .
Divide out common units, leaving the desired unit, kilometer.
Convert Between Systems
Multiply.
Method 2Use 1 mi ≈ 1.609 km.
Since 1 km ≈ 0.621 mi,
multiply by .
Divide out common units, leaving the desired unit, kilometer.
Convert Between Systems
Answer: So, 10 miles is approximately 16.09 kilometers.
A. 1.06
B. 3.78
C. 4.23
D. 8.46
Complete the conversion. Round to the nearest hundredth.4 L ≈ __ qt
Convert Between Systems
Complete the conversion. Round to the nearest hundredth.3 gal ≈ __ L
Method 1Use 1 L ≈ 0.264 gal.
Since 1 L ≈ 0.264 gal,
multiply by .
Divide out common units, leaving the desired unit, liter.
Convert Between Systems
Multiply.
Method 2Use 1 gal ≈ 3.785 L.
Since 1 gal ≈ 3.785 L,
multiply by .
Divide out common units, leaving the desired unit, liter.
Convert Between Systems
Answer: 3 gallons is approximately 11.36 liters.
A. 8.75
B. 113.48
C. 7,087.50
D. 7,142.86
Complete the conversion. Round to the nearest hundredth.250 g ≈ __ oz
A. 12.68
B. 6.34
C. 2.84
D. 1.58
Complete the conversion. Round to the nearest hundredth if necessary.6 L ≈ __ pt
A. 4.23
B. 26.43
C. 54.48
D. 264.32
Complete the conversion. Round to the nearest hundredth if necessary.120 lb ≈ __ kg
A. 684 cm, 300 in., 8 m, 28 ft
B. 8 m, 28 ft, 300 in., 684 cm
C. 300 in., 8 m, 684 cm, 28 ft
D. 28 ft, 8 m, 300 in., 684 cm
Students created a car that moved using a mousetrap. Julia, Chris, Ben, and Anne each ran a test trial. The table shows each of their measurements. Which of the following shows the correct order of the distances, from least to greatest?